U.S. patent application number 17/132402 was filed with the patent office on 2021-05-06 for auricle clamp and delivery device thereof.
The applicant listed for this patent is Beijing Med Zenith Medical Scientific Co., Ltd.. Invention is credited to Danian Ke, Jinshan Li, Jian Meng, Qingliang Zhou.
Application Number | 20210128158 17/132402 |
Document ID | / |
Family ID | 1000005345552 |
Filed Date | 2021-05-06 |
![](/patent/app/20210128158/US20210128158A1-20210506\US20210128158A1-2021050)
United States Patent
Application |
20210128158 |
Kind Code |
A1 |
Zhou; Qingliang ; et
al. |
May 6, 2021 |
AURICLE CLAMP AND DELIVERY DEVICE THEREOF
Abstract
An auricle clamp for heart surgery comprises: two clamp arms two
springs located at two ends of the clamp arms. The two springs are
configured to: connect the two ends of the two clamp arms to form a
closed-loop structure; and provide a clamping force that enables
closing of the two clamp arms; wherein: a clamp arm of the two
clamp arms comprises a first rod-shaped tube segment and a second
rod-shaped tube segment joined at a hinge site; in a first state,
the two clamp arms are substantially parallel; and in a second
state, the two clamp arms form a quadrilateral shape, wherein the
first rod-shaped tube segments and the second rod-shaped tube
segments of the two clamp arms form a majority of the quadrilateral
shape.
Inventors: |
Zhou; Qingliang; (Beijing,
CN) ; Li; Jinshan; (Beijing, CN) ; Ke;
Danian; (Beijing, CN) ; Meng; Jian; (Beijing,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Beijing Med Zenith Medical Scientific Co., Ltd. |
Beijing |
|
CN |
|
|
Family ID: |
1000005345552 |
Appl. No.: |
17/132402 |
Filed: |
December 23, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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15744065 |
Jan 12, 2018 |
10905433 |
|
|
PCT/CN2016/084948 |
Jun 6, 2016 |
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17132402 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61B 17/0057 20130101;
A61B 17/122 20130101; A61B 17/1285 20130101; A61B 17/1227
20130101 |
International
Class: |
A61B 17/122 20060101
A61B017/122; A61B 17/00 20060101 A61B017/00; A61B 17/128 20060101
A61B017/128 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 11, 2015 |
CN |
201510505137.7 |
Claims
1. An auricle clamp for heart surgery, comprising: two clamp arms;
and two springs located at two ends of the clamp arms, configured
to: connect the two ends of the two clamp arms to form a
closed-loop structure; and provide a clamping force that enables
closing of the two clamp arms; wherein: a clamp arm of the two
clamp arms comprises a first rod-shaped tube segment and a second
rod-shaped tube segment joined at a hinge site; in a first state,
the two clamp arms are substantially parallel; and in a second
state, the two clamp arms form a quadrilateral shape, wherein the
first rod-shaped tube segments and the second rod-shaped tube
segments of the two clamp arms form a majority of the quadrilateral
shape.
2. The auricle clamp of claim 1, wherein the auricle clamp is sized
to be used in minimally invasive surgery.
3. The auricle clamp of claim 1, wherein the springs are U-shaped
springs.
4. The auricle clamp of claim 1, wherein the springs and the first
and second rod-shaped tube segments are made of: stainless steel,
cobalt-based alloy, platinum-iridium alloy, nickel-titanium alloy,
magnesium-based alloy, or a combination thereof.
5. The auricle clamp of claim 1, wherein each spring has two ends
which are respectively inserted into holes at ends of the clamp
arms, and the spring and the clamp arms are coupled together in a
manner of: extrusion deformation, welding, adhesion, or threaded
connection.
6. The auricle clamp of claim 1, further comprising a flexible
lining wire inserted into the first rod-shaped tube segment and the
second rod-shaped tube segment to pivotally connect the first
rod-shaped tube segment and the second rod-shaped tube segment.
7. The auricle clamp of claim 6, wherein the flexible lining wire
is a nickel-titanium lining wire, and the nickel-titanium lining
wire and the first rod-shaped tube segment and the second
rod-shaped tube segment are fixed together by extrusion
deformation.
8. The auricle clamp of claim 1, wherein outermost layers of the
clamp arms and/or the springs are wrapped with a polyester vascular
prosthesis or polyester braided fabric.
9. The auricle clamp of claim 1, wherein an outer sleeve is
provided outside the clamp arms and the springs, and the outer
sleeve includes a high molecular material.
10. The auricle clamp of claim 1, wherein the auricle clamp is
conveyed to a root of an auricle by a delivery device.
11. The auricle clamp of claim 1, wherein the auricle clamp is
conveyed to a root of an auricle by a delivery device comprising: a
handle; a coupler connected with the handle and capable of rotating
relative to the handle; an outer tube connected with the coupler,
wherein the outer tube is configured to rotate about a center axis
of the outer tube with the rotation of the coupler; a liner tube
capable of moving within the outer tube along the center axis of
the outer tube; a trigger connected with the handle and capable of
moving relative to the handle, wherein the trigger is connected to
an end of the liner tube close to the handle so as to push the
liner tube to move within the outer tube; and upper teeth and lower
teeth configured to carry the auricle clamp, pivotally connected to
an end of the outer tube away from the handle, wherein the upper
teeth and the lower teeth are connected to the liner tube
respectively so as to pivot relative to the outer tube with
movement of the liner tube within the outer tube to facilitate
opening and closing of the upper teeth and the lower teeth.
12. An auricle clamp for heart surgery, comprising: two clamp arms;
and two springs located at two ends of the clamp arms, configured
to: connect the two ends of the two clamp arms to form a
closed-loop structure; and provide a clamping force that enables
closing of the two clamp arms; wherein a clamp arm of the two clamp
arms comprises: a first rod-shaped tube segment and a second
rod-shaped tube segment joined at a hinge site; and a flexible
lining wire inserted into the first rod-shaped tube segment and the
second rod-shaped tube segment, configured to pivotally connect the
first rod-shaped tube segment and the second rod-shaped tube
segment.
13. The auricle clamp of claim 12, wherein the springs are U-shaped
springs.
14. The auricle clamp of claim 12, wherein the springs and the
first and second rod-shaped tube segments are made of: stainless
steel, cobalt-based alloy, platinum-iridium alloy, nickel-titanium
alloy, magnesium-based alloy, or a combination thereof.
15. The auricle clamp of claim 12, wherein each spring has two ends
which are respectively inserted into holes at ends of the clamp
arms, and the spring and the clamp arms are coupled together in a
manner of: extrusion deformation, welding, adhesion, or threaded
connection.
16. The auricle clamp of claim 12, wherein the flexible lining wire
is a nickel-titanium lining wire, and the nickel-titanium lining
wire and the first rod-shaped tube segment and the second
rod-shaped tube segment are fixed together by extrusion
deformation.
17. The auricle clamp of claim 12, wherein outermost layers of the
clamp arms and/or the springs are wrapped with a polyester vascular
prosthesis or polyester braided fabric.
18. The auricle clamp of claim 12, wherein an outer sleeve is
provided outside the clamp arms and the springs, and the outer
sleeve includes a high molecular material.
19. The auricle clamp of claim 12, wherein the auricle clamp is
conveyed to a root of an auricle by a delivery device.
20. The auricle clamp of claim 12, wherein the auricle clamp is
conveyed to a root of an auricle by a delivery device comprising: a
handle; a coupler connected with the handle and capable of rotating
relative to the handle; an outer tube connected with the coupler,
wherein the outer tube is configured to rotate about a center axis
of the outer tube with the rotation of the coupler; a liner tube
capable of moving within the outer tube along the center axis of
the outer tube; a trigger connected with the handle and capable of
moving relative to the handle, wherein the trigger is connected to
an end of the liner tube close to the handle so as to push the
liner tube to move within the outer tube; and upper teeth and lower
teeth configured to carry the auricle clamp, pivotally connected to
an end of the outer tube away from the handle, wherein the upper
teeth and the lower teeth are connected to the liner tube
respectively so as to pivot relative to the outer tube with
movement of the liner tube within the outer tube to facilitate
opening and closing of the upper teeth and the
Description
FIELD OF THE INVENTION
[0001] The present invention relates to the field of medical
apparatus and instruments, and in particular to an auricle clamp
and a delivery device thereof.
BACKGROUND OF THE INVENTION
[0002] Atrial fibrillation is one of the most common clinical
arrhythmias, and a large number of patients suffer from it. At
present, there are about 8 million atrial fibrillation patients in
China and the number is increasing year by year. In patients with
atrial fibrillation, 0.4% -1% of them suffer from cerebral apoplexy
every year, that is to say, of the 8 million patients, 32,000 to
80,000 people may have cerebral arterial thrombosis due to the
atrial fibrillation each year. Cerebral apoplexy is the greatest
harm from atrial fibrillation, and studies show that 15-20% of
cerebral arterial thrombosis is caused by the atrial fibrillation,
and about one in 6 cerebral apoplexy patients is an atrial
fibrillation patient. The incidence of cerebral apoplexy in
patients with nonvalvular atrial fibrillation is 5.6 times that in
normal people and the incidence of valvular atrial fibrillation in
cerebral apoplexy is 17.6 times that in normal people; and
furthermore, cerebral apoplexy caused by the atrial fibrillation
has more serious consequences, with the mortality and disability
rate reaching 70%. For patients with valvular atrial fibrillation,
57% of atrial thrombi originate from the left auricle, and for
patients with nonvalvular atrial fibrillation, 90% of left atrial
thrombi originate from the left auricle. Even after the restoration
of sinus rhythm, the left auricle has stunned contractions, and
there is still the possibility of thrombosis.
[0003] Currently there are three main ways to prevent the cerebral
arterial thrombosis caused by atrial fibrillation clinically. One
method is to take anticoagulant drugs such as warfarin, but the use
of warfarin has a risk of bleeding, requires frequent monitoring,
and have many contraindications, and thus its clinical application
is difficult; and in addition, warfarin may lead to osteoporosis
and soft tissue necrosis. The second method is to directly remove
or ligate the auricle during the cardiac surgery, the main
disadvantage of this method is that the complete closure rate of
the left auricle is relatively low, and previous studies show that
the highest success rate of completely resecting the left auricle
is about 80%. The third method is to close the left auricle using
an instrument by means of percutaneous intervention with an
intracardiac left atrial appendage closure product, such as PLAATO
(Percutaneous Left Atrial Appendage Transcatheter Occlusion),
WATCHMAN, ACP (Amplatzer Cardiac Plug) and so on. Although there
are many left auricle occlusion products for intracardiac
intervention, the operation is complex, the risk is higher, and the
safety and effectiveness are to be verified. Researches by
PROTECK-AF show a trend that the safety and the effectiveness of
the interventional left auricle occlusion treatment are better than
those of the warfarin; serious adverse events occur within a month
after the left auricle occlusion treatment, and longer follow-up is
required so as to determine the long-term safety and efficacy of
the occlusion treatment.
SUMMARY OF THE INVENTION
(1) Technical Problem to Be Solved
[0004] The objective of the present invention is to design an
auricle clamp and a delivery device thereof. The auricle clamp is
placed in the root of the left auricle from the outside of the
heart in thoracotomy or minimally invasive surgery to permanently
close the left auricle.
(2) Technical Solution
[0005] The present invention provides an auricle clamp, including
two parallel clamp arms; and two springs located at two ends of the
parallel clamp arms respectively, for connecting the two ends of
the two clamp arms to form a closed-loop structure and providing a
clamping force enabling the two clamp arms to be located close to
each other; wherein at least one of the two clamp arms is divided
into a first segment and a second segment, and the first segment
and the second segment are pivotally connected or connected via a
flexible material. Preferably, each one of the two clamp arms is
divided into the first segment and the second segment, and the
first segment and the second segment are pivotally connected.
[0006] Preferably, the springs are U-shaped springs.
[0007] Preferably, the first segment and the second segment are
straight rod-shaped tubes.
[0008] Preferably, the springs and the straight rod-shaped tubes
are made of at least one of stainless steel, a cobalt-based alloy,
a platinum-iridium alloy, a nickel-titanium alloy and a
magnesium-based alloy.
[0009] Preferably, after the two ends of the U-shaped spring are
respectively inserted into the straight rod-shaped tubes, the
U-shaped spring and the straight rod-shaped tubes can be combined
together by a connecting point in an extrusion deformation,
welding, adhesion or threaded connection manner.
[0010] Preferably, the flexible material is a nickel-titanium
lining wire, and the two straight rod-shaped tubes of each of the
clamp arms are connected in such a manner that the nickel-titanium
lining wire is inserted into the two straight rod-shaped tubes, and
the nickel-titanium lining wire and the two straight rod-shaped
tubes are fixed together by extrusion deformation.
[0011] Preferably, the outermost layers of the clamp arms and/or
the springs are wrapped with a polyester vascular prosthesis or
polyester braided fabric.
[0012] The present invention further provides a delivery device for
conveying the auricle clamp to the root of the auricle, the
delivery device including a handle; a coupler connected with the
handle and capable of rotating relative to the handle; an outer
tube connected with the coupler, wherein the outer tube rotates
about a centre axis of the outer tube with the rotation of the
coupler; a liner tube capable of moving within the outer tube along
the centre axis of the outer tube; a trigger connected with the
handle and capable of moving relative to the handle, wherein the
trigger is connected to an end of the liner tube close to the
handle so as to push the liner tube to move within the outer tube;
and upper teeth and lower teeth pivotally connected to an end of
the outer tube away from the handle, wherein the upper teeth and
the lower teeth are connected to the liner tube respectively so as
to pivot relative to the outer tube with the movement of the liner
tube within the outer tube to facilitate the scissor-type opening
and closing of the upper teeth and lower teeth.
[0013] Preferably, the upper teeth and the lower teeth are provided
with buckling devices capable of detachably fixing the auricle
clamp.
[0014] Preferably, a chute is formed in the outer tube, so that the
liner tube can move along the chute.
[0015] Preferably, the delivery device is provided with a self
locking device for locking the positions of the outer tube and/or
the liner tube. The self locking device can be a fixing pin, a
chute pin or the like.
[0016] Preferably, the delivery device further includes an
unlocking button for release from a lock state of the self locking
device.
[0017] Preferably, the auricle clamp is fixed in the upper teeth
and the lower teeth of the delivery device in a bundling or mutual
clamping manner.
[0018] Preferably, the auricle clamp provides a sustained and
stable closing force and is implanted in the root of the auricle to
effectively block the blood flow of the left atrium and the left
auricle.
[0019] Preferably, the delivery device conveys the auricle clamp to
a target position, controls the opening and closing state of the
auricle clamp and can effectively release the auricle clamp.
[0020] Preferably, the polyester vascular prosthesis or the
polyester braided fabric wrapping the outermost layers of the clamp
arms and the springs can form an outer sleeve, and has good
biocompatibility, thereby facilitating tissue climbing; and its
texture is soft, thereby reducing the instrument's pressure on
tissues and reducing damage to the tissues.
[0021] Preferably, the outer sleeve can be composed of a high
molecular material, such as PET, PTFE or the like.
[0022] Preferably, the delivery device can control the opening and
closing of the auricle clamp and can achieve an in vivo rotation
function of the auricle clamp.
[0023] Preferably, the auricle clamp is installed on the delivery
device in a bundling or mutual clamping manner, and free detachment
of the auricle clamp can be achieved.
[0024] Preferably, the auricle clamp is pre-installed, or assembled
prior to use, onto the delivery device.
[0025] Preferably, the delivery device can keep an open state of
the product through the self locking device.
(3) Beneficial Effects
[0026] The auricle clamp and the delivery device provided by the
present invention have the following advantages:
[0027] 1. the sizes of the parts of the auricle clamp and the
delivery device entering the human body are small, so that the
auricle clamp and the delivery device can be applied to
establishing an entrance using a puncture outfit (Tocar) to perform
minimally invasive surgery;
[0028] 2. the structure of the springs of the auricle clamp can
provide a stable closing force;
[0029] 3. the polyester vascular prosthesis is used on the outer
layer of the auricle clamp, thereby facilitating tissue growth and
reducing the drop risk of the product; and
[0030] 4. the delivery device can rotate around the axis, thereby
facilitating the adjustment of the product in the surgery.
BRIEF DESCRIPTION OF THE DRAWINGS
[0031] FIG. 1A to FIG. 1C are planar schematic diagrams of an
auricle clamp and a delivery device of the present invention;
[0032] FIG. 2A to FIG. 2C are schematic diagrams of a first
embodiment of the auricle clamp of the present invention;
[0033] FIG. 3 is a schematic diagram of a second embodiment of the
auricle clamp of the present invention.
[0034] Reference signs in the drawings:
[0035] 101: auricle clamp; 102: moving head; 103: liner tube; 104:
outer tube; 105: coupler; 106: trigger; 107: unlocking button; 201:
U-shaped spring; 202: clamp arm; 203: nickel-titanium wire; 301:
spring; 302: clamp arm; 303: lining wire.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0036] The specific embodiments of the present invention will be
described in further detail below in conjunction with the drawings
and embodiments. The following examples are used for illustrating
the present invention, rather than limiting the scope of the
present invention.
[0037] An auricle clamp of the present invention includes: two
parallel clamp arms; and two springs located at two ends of the
parallel clamp arms respectively, for connecting the two ends of
the two clamp arms to form a closed-loop structure and providing a
clamping force enabling the two clamp arms to be located close to
each other. At least one of the two clamp arms is divided into a
first segment and a second segment, it is the best that each one of
the two clamp arms is divided into the first segment and the second
segment, the first segment and the second segment are pivotally
connected or connected via a flexible material, for example, a
flexible wire is inserted into the first segment and the second
segment, so that the first segment and the second segment can
flexibly rotate relative to each other.
[0038] The springs can be U-shaped springs, spiral springs, coil
springs or any other suitable form.
[0039] The first segment and the second segment can be straight
rod-shaped tubes.
[0040] The springs and the straight rod-shaped tubes can be made of
at least one of stainless steel, a cobalt-based alloy, a
platinum-iridium alloy, a nickel-titanium alloy and a
magnesium-based alloy.
[0041] After the two ends of the U-shaped spring are respectively
inserted into the straight rod-shaped tubes, the U-shaped spring
and the straight rod-shaped tubes can be combined together by a
connecting point in an extrusion deformation, welding, adhesion or
threaded connection manner.
[0042] The flexible material is a nickel-titanium lining wire, the
two straight rod-shaped tubes of the clamp arms are connected in
such a manner that the nickel-titanium lining wire is inserted into
the two straight rod-shaped tubes, and the nickel-titanium lining
wire and the two straight rod-shaped tubes are fixed together by
extrusion deformation.
[0043] The outermost layers of the clamp arms and/or the springs
are wrapped with a polyester vascular prosthesis or polyester
braided fabric.
[0044] A delivery device for conveying the auricle clamp to the
root of the auricle of the present invention can include: a handle;
a coupler connected with the handle and capable of rotating
relative to the handle; an outer tube connected with the coupler,
wherein the outer tube rotates about a centre axis of the outer
tube with the rotation of the coupler; a liner tube capable of
moving within the outer tube along the centre axis of the outer
tube; a trigger connected with the handle and capable of moving
relative to the handle, wherein the trigger is connected to an end
of the liner tube close to the handle so as to push the liner tube
to move within the outer tube; and upper teeth and lower teeth
pivotally connected to an end of the outer tube away from the
handle, wherein the upper teeth and the lower teeth are connected
to the liner tube respectively so as to pivot relative to the outer
tube with the movement of the liner tube within the outer tube to
facilitate the scissor-type opening and closing of the upper teeth
and lower teeth.
[0045] The auricle clamp is fixed in the upper teeth and the lower
teeth in a bundling or mutual clamping manner. Specifically, the
upper teeth and the lower teeth are provided with buckling devices
capable of detachably fixing the auricle clamp, or the auricle
clamp is bundled on the upper teeth and the lower teeth.
[0046] A chute can be formed in the outer tube, so that the liner
tube can move along the chute.
[0047] The delivery device can be provided with a self locking
device for locking the positions of the outer tube and/or the liner
tube. The self locking device can be a fixing pin, a chute pin or
the like. In this case, the delivery device further includes an
unlocking button for release from a lock state of the self locking
device.
[0048] The auricle clamp provides a sustained and stable closing
force and is implanted in the root of the auricle to effectively
block the blood flow of the left atrium and the left auricle.
[0049] The delivery device conveys the auricle clamp to a target
position, controls the opening and closing state of the auricle
clamp and can effectively release the auricle clamp.
[0050] The polyester vascular prosthesis or the polyester braided
fabric wrapping the outermost layers of the clamp arms and the
springs can form an outer sleeve, and has good biocompatibility,
thereby facilitating tissue climbing; and its texture is soft,
thereby reducing the instrument's pressure on tissues and reducing
damage to the tissues.
[0051] The outer sleeve can be composed of a high molecular
material, such as PET, PTFE or the like.
[0052] The delivery device can control the opening and closing of
the auricle clamp and can achieve an in vivo rotation function of
the auricle clamp.
[0053] The auricle clamp is installed on the delivery device in a
bundling or mutual clamping manner, and free detachment of the
auricle clamp can be achieved. The auricle clamp is pre-installed,
or assembled prior to use, onto the delivery device. The delivery
device can keep an open state of the product through the self
locking device.
[0054] FIG. 1A to FIG. 1C show schematic diagrams of the auricle
clamp and the delivery device of the present invention. FIG. 1A
shows an initial state, namely a clamped state, of the product; and
as shown in FIG. 1B, the auricle clamp and the delivery device
include an auricle clamp 101 and a delivery device. Description of
the specific structure of the auricle clamp 101 is as follows.
[0055] The delivery device includes: a handle; a coupler 105
connected with the handle and capable of rotating relative to the
handle; an outer tube 104 connected with the coupler 105, wherein
the outer tube 104 rotates about a centre axis of the outer tube
104 with the rotation of the coupler; a liner tube 103 capable of
moving within the outer tube along the centre axis of the outer
tube 104; a trigger 106 connected with the handle and capable of
moving relative to the handle, wherein the trigger 106 is connected
to an end of the liner tube 103 close to the handle so as to push
the liner tube 103 to move within the outer tube 104; and upper
teeth and lower teeth pivotally connected to an end of the outer
tube 104 away from the handle, wherein the upper teeth and the
lower teeth are connected to the liner tube 103 respectively so as
to pivot relative to the outer tube 104 with the movement of the
liner tube 103 within the outer tube 104 to facilitate the
scissor-type opening and closing of the upper teeth and lower
teeth. In the present embodiment, the upper teeth and the lower
teeth are connected to the outer tube through a moving head 102 on
a distal end of the outer tube 104. For the specific structures of
the parts of the delivery device, reference can be made to similar
delivery devices in the prior art, for example, ultrasound knives,
abdominal forceps and other tools used for surgical operations.
[0056] The auricle clamp 101 can be fixed in the upper teeth and
the lower teeth in the bundling or mutual clamping manner.
Specifically, the upper teeth and the lower teeth are provided with
buckling devices capable of detachably fixing the auricle clamp, or
the auricle clamp is bundled on the upper teeth and the lower
teeth. For the specific structure, reference can be made to similar
structures in the prior art, and this thus will not be repeated
here.
[0057] A chute can be formed in the outer tube 104, so that the
liner tube can move along the chute.
[0058] The delivery device can be provided with a self locking
device for locking the positions of the outer tube and/or the liner
tube. The self locking device can be a fixing pin, a chute pin or
the like (not shown, for the specific structure, reference can be
made to similar structures in the prior art, and this will not be
repeated here). In this case, the delivery device further includes
an unlocking button 107 for release from a lock state of the self
locking device.
[0059] The delivery device of the present invention can operate as
follows. As shown in FIG. 1C, the auricle clamp 101 is fixed in the
upper teeth and the lower teeth of the moving head 102 in the
bundling (or mutual clamping configuration) manner; an operator
uses an intuitive method such as endoscope or other method to
transport the delivery device with the auricle clamp 101 to a place
close to the auricle position to be clamped, and pulls the trigger
106 so that the upper teeth and the lower teeth open in a scissor
type so as to expand the auricle clamp 101 into a quadrilateral
shape as shown in FIG. 1B, and the open state is locked by the self
locking device. The position of the auricle clamp can be adjusted
by rotating the coupler 105 to thereby rotate the auricle clamp.
After the position is finally determined, the unlocking button 107
is actuated for release from the lock state of the self locking
device, and the device returns to the initial state, as shown in
FIG. 1A. After the operation is completed, the operator cuts it at
the bundling point or enables release from the buckled state, and
the auricle clamp is detached immediately from the delivery
device.
[0060] As mentioned above, the auricle clamp and the delivery
device of the present invention can establish an entrance using a
puncture outfit to cooperate with a laparoscope to perform
minimally invasive surgery. Of course, other use methods can also
available. For example, the auricle clamp and the delivery device
of the present invention are used during thoracotomy.
[0061] The auricle clamp in the present invention provides a stable
closing force by means of the springs, the clamp arms permanently
close the left auricle from the outside of the heart, and some
specific examples of the auricle clamp of the present invention are
given below.
[0062] The specific structure of the first embodiment:
[0063] As shown in FIG. 2A, which illustrate an initial state of
the auricle clamp, the auricle clamp 101 includes two U-shaped
springs 201 and two parallel clamp arms 202. Each clamp arm 202 is
divided into a first segment and a second segment, the first
segment and the second segment are connected in a hinged manner,
the two springs 201 are located at two ends of the parallel clamp
arms respectively and are used for connecting the two ends of the
two clamp arms to form a closed-loop structure and providing a
clamping force enabling the two clamp arms to be located close to
each other. The two U-shaped springs 201 are respectively inserted
into left and right clamp arms and are fixed in a welding or force
fit manner.
[0064] In addition, a nickel-titanium wire 203 can be provided in
the hole of the clamp arm. The auricle clamp is placed at the root
of the auricle by the delivery device, and after the auricle is
clamped, the U-shaped springs on the two ends of the auricle clamp
deform due to the thickness of the auricle so as to provide the
clamping force for the clamp arms to close the auricle, and
meanwhile the nickel-titanium wire is beneficial for ensuring the
straightness of the hinged sites of the two clamp arms; FIG. 2B
shows the auricle clamp is pulled into a parallelogram; and FIG. 2C
is an exploded structure diagram of the auricle clamp.
[0065] The specific structure of the second embodiment:
[0066] As shown in FIG. 3, which illustrate an initial state of the
auricle clamp, the auricle clamp 101 includes two parallel clamp
arms 302; and two springs 301 located at two ends of the parallel
clamp arms respectively, for connecting the two ends of the two
clamp arms to form a closed-loop structure and providing a clamping
force enabling the two clamp arms to be located close to each
other. Each one of the two clamp arms 302 is divided into a first
segment and a second segment, being different from the first
embodiment in that the first segment and the second segment are not
connected in the hinged manner, but are connected via a flexible
material, such as a nickel-titanium lining wire 303; the U-shaped
springs 301 and the clamp arms 302 are fixed in a welding or force
fit manner, and the nickel-titanium lining wire 303 and the clamp
arms 302 tubes are fixed in the welding or force fit manner; and
the lining wire 303 is bent when the auricle clamp 101 is opened,
and the auricle clamp becomes a quadrangle after being opened, and
after the delivery device places the auricle clamp at the root of
the auricle, the springs deform due to the thickness of the auricle
to provide a clamping force for the clamp arms so as to close the
left auricle, and meanwhile the nickel-titanium lining wire 303
guarantees the straightness of the two clamp arms.
[0067] The present invention has the following advantages:
[0068] 1. the sizes of the parts of the auricle clamp and the
delivery device entering the human body are small, so that the
auricle clamp and the delivery device can be applied to
establishing an entrance using a puncture outfit (Tocar) to perform
minimally invasive surgery;
[0069] 2. the structure of the springs of the auricle clamp can
provide a stable closing force;
[0070] 3. the polyester vascular prosthesis is used on the outer
layer of the auricle clamp, thereby facilitating tissue growth and
reducing the drop risk of the product; and
[0071] 4. the delivery device can rotate around the axis, thereby
facilitating the adjustment of the product in the surgery.
[0072] Described above are only preferred embodiments of the
present invention, which are not intended to limit the present
invention, and any modifications, equivalent replacements,
improvements and the like made within the spirit and principle of
the present invention shall be encompassed within the protection
scope of the present invention.
INDUSTRIAL APPLICABILITY
[0073] The present invention provides an auricle clamp, including
two parallel clamp arms; and two springs located at two ends of the
parallel clamp arms respectively, for connecting the two ends of
the two clamp arms to form a closed-loop structure and providing a
clamping force enabling the two clamp arms to be located close to
each other, wherein at least one of the two clamp arms is divided
into a first segment and a second segment, and the first segment
and the second segment are pivotally connected or connected via a
flexible material. The present invention further provides a
delivery device for conveying the auricle clamp to the root of the
auricle, the delivery device including a handle; a coupler
connected with the handle and capable of rotating relative to the
handle; an outer tube connected with the coupler, wherein the outer
tube rotates about a centre axis of the outer tube with the
rotation of the coupler; a liner tube capable of moving within the
outer tube along the centre axis of the outer tube; a trigger
connected with the handle and capable of moving relative to the
handle, wherein the trigger is connected to an end of the liner
tube close to the handle so as to push the liner tube to move
within the outer tube; and upper teeth and lower teeth pivotally
connected to an end of the outer tube away from the handle, wherein
the upper teeth and the lower teeth are connected to the liner tube
respectively so as to pivot relative to the outer tube with the
movement of the liner tube within the outer tube to facilitate the
scissor-type opening and closing of the upper teeth and lower
teeth. The auricle clamp of the present invention is fixed in the
upper teeth and the lower teeth of the moving head in the bundling
or (mutual clamping configuration) manner; the operator uses an
intuitive method such as endoscope or other method to transport the
delivery device with the auricle clamp to a position close to the
auricle to be clamped, and pulls the trigger so that the upper
teeth and the lower teeth open in a scissor type so as to expand
the auricle clamp into a quadrilateral shape, and the open state is
locked by the self locking device. The position of the auricle
clamp can be adjusted by rotating the coupler to thereby rotate the
auricle clamp. After the position is finally determined, the
unlocking button is actuated for release from the lock state of the
self locking device, and the device returns to the initial state,
and after the operation is completed, the operator cuts it at the
bundling point or enables a release from the buckled state, and the
auricle clamp is detached immediately from the delivery device.
Therefore the practicability is high.
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