CN116458954A - Hemostatic clip push-pull assembly with lock catch, hemostatic clip and tissue clamping device - Google Patents
Hemostatic clip push-pull assembly with lock catch, hemostatic clip and tissue clamping device Download PDFInfo
- Publication number
- CN116458954A CN116458954A CN202310225454.8A CN202310225454A CN116458954A CN 116458954 A CN116458954 A CN 116458954A CN 202310225454 A CN202310225454 A CN 202310225454A CN 116458954 A CN116458954 A CN 116458954A
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- China
- Prior art keywords
- hemostatic
- pull rod
- sleeve
- hemostatic clip
- elastic buckle
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- 230000002439 hemostatic effect Effects 0.000 title claims abstract description 205
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000023597 hemostasis Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000000451 tissue damage Effects 0.000 description 2
- 231100000827 tissue damage Toxicity 0.000 description 2
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/122—Clamps or clips, e.g. for the umbilical cord
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/128—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for applying or removing clamps or clips
- A61B17/1285—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for applying or removing clamps or clips for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B2017/12004—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for haemostasis, for prevention of bleeding
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention discloses a hemostatic clip push-pull assembly with a lock catch, a hemostatic clip and a tissue clamping device, which comprise a hemostatic clip body, a pull rod, an elastic buckle connected with the hemostatic clip body to form a fixed end, and a limiting piece connected with the pull rod, wherein the free end of the elastic buckle is provided with a clamping hook capable of being in a free state and a constrained state; when the pull rod is connected with the hemostatic clamp body, the limiting piece presses the elastic buckle so that the clamping hook is in a constrained state, and when the pull rod is separated from the hemostatic clamp body, the limiting piece is separated from the elastic buckle so that the elastic buckle is in a free state. According to the hemostatic clamp, when the hemostatic clamp body is initially closed, the pull rod is still in a connection state with the hemostatic clamp body, and an operator judges whether the clamping position needs to be readjusted when feeling the closing of the hemostatic clamp body, so that the accuracy of operation is improved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a hemostatic clamp push-pull assembly with a lock catch, a hemostatic clamp and a tissue clamping device.
Background
Hemostatic clips, which typically use mechanical pressure generated when two clips are closed to compress the bleeding site to block blood flow; then, the clamping piece is separated by the external control handle, so that the clamping piece is left in the human body to achieve the aim of continuous hemostasis. Because of adopting the mechanical hemostasis mode, the device has the advantages of no damage to adjacent tissues, low incidence rate of rebleeding, low incidence rate of adverse reaction and the like.
Two clamping pieces are closed through retrieving the intraductal mode of cover, in order to make clamping piece closing force stable, prior art has set up the reverse open limit structure of restriction clamping piece on the cover, avoid the hemostatic clip release back, the clamping piece breaks away from the cover again and opens, traditional limit structure (like patent number CN 201921932299), mainly through set up the barb on hemostatic clip body, set up the cooperation structure with the barb on the cover simultaneously and realize spacing, for example perforation or step face, when the clamping piece reached closed condition, the clamping piece received the sleeve restriction and can't continue the back-moving, the barb just reaches the extreme position of back-moving, consequently, the barb receives back-moving restriction preceding or simultaneously with cooperation structure lock at the clamping piece, the operator feels the closed limit structure of feeling of clamping piece and has started, can't open the clamping piece again this moment, can not adjust clamping position many times, the proficiency requirement to the operator is very high.
Secondly, in the traditional structure, the starting of limit structure (namely the axial locking of clamping piece), the separation of pull rod and clamping piece and the separation of sleeve pipe and connecting axle are all asynchronous, and accomplish these several actions all need to increase external force, and it is probably to cause certain shake to the clamping piece is in the centre gripping tissue state, and the multiple shake causes the tissue damage very easily.
Disclosure of Invention
In order to solve the technical problems that when the clamping piece of the hemostatic clamp in the prior art reaches a closed state, the limiting structure of the clamping piece is started, the clamping piece cannot be opened again, the clamping position cannot be adjusted for multiple times, and the requirement on the proficiency of an operator is high, the invention provides a hemostatic clamp push-pull assembly with a lock catch, a hemostatic clamp and a tissue clamping device, and aims to solve the problems.
The invention provides a hemostatic clip push-pull assembly with a lock catch, which comprises a hemostatic clip body, a pull rod detachably connected with the hemostatic clip body, an elastic buckle connected with the hemostatic clip body to form a fixed end, and a limiting piece connected with the pull rod, wherein the free end of the elastic buckle is provided with a clamping hook capable of being in a free state and a constrained state; when the clamping hook is in a restrained state, the transverse distance from the clamping hook to the central shaft of the hemostatic clamp body is minimum; when the clamping hook is in a free state, the transverse distance from the clamping hook to the central shaft of the hemostatic clamp body is the largest.
When the pull rod is connected with the hemostatic clamp body, the limiting piece presses the elastic buckle so that the clamping hook is in a constrained state, and when the pull rod is separated from the hemostatic clamp body, the limiting piece is separated from the elastic buckle so that the elastic buckle is in a free state.
Further, the elastic buckle is of a U-shaped structure, the fixed end of the elastic buckle is located in the middle of the elastic buckle, free ends are formed on two sides of the elastic buckle, and a clamping hook is arranged at each free end.
Further, the opening direction of the clamping hook is opposite to the moving direction of the pull rod when the pull rod leaves the hemostatic clamp body.
Further, the limiting piece is a pressing plate pressed on two sides of the elastic buckle.
Further, the end part of the hemostatic clip body connected with the pull rod is provided with a C-shaped connecting part, the end part of the pull rod is provided with a C-shaped matching part containing the C-shaped connecting part, the C-shaped matching part can be deformed and opened, and the elastic buckle is arranged on the C-shaped connecting part.
The invention also provides a hemostatic clip which comprises a sleeve, a connecting shaft positioned in the sleeve and the hemostatic clip push-pull assembly with the lock catch; the hemostatic clamp comprises a hemostatic clamp body, a hemostatic clamp sleeve, a hemostatic clamp rod, a connecting shaft and a connecting shaft, wherein the hemostatic clamp body is arranged in the sleeve, the sleeve forces the hemostatic clamp body to be in a clamped and folded state when the hemostatic clamp body moves backwards, the center of the connecting shaft is provided with a shaft hole for the pull rod to pass through, and the pull rod can drive the connecting shaft to move backwards.
The circumference of the sleeve is provided with a through hole matched with the clamping hook, and when the clamping hook is in a free state, the clamping hook is hooked on the through hole.
Further, the sleeve and the connecting shaft are provided with mutually matched axial limiting structures, and the axial limiting structures can inhibit the connecting shaft from being separated from the sleeve after the connecting shaft is in a rear direction; the axial limiting structure can fail under the tensile force of the pull rod, so that the connecting shaft is separated from the sleeve after the connecting shaft is in a rear direction.
Further, the connecting shaft is positioned in the sleeve, the outer peripheral surface of the connecting shaft is provided with a limiting shoulder, and the rear end surface of the sleeve is provided with a flanging which is abutted with the limiting shoulder and inhibits the connecting shaft from being separated from the sleeve; the limiting shoulder and the flanging form an axial limiting structure; the flange can deform under the extrusion force of the limiting shoulder, so that the connecting shaft can be separated from the sleeve.
Further, the outer peripheral surface of the pull rod is also connected with a supporting rod, and when the supporting rod is initially abutted with the connecting shaft of the hemostatic clamp, the pull rod is not separated from the hemostatic clamp body.
Furthermore, the two clamping piece sides of the hemostatic clamp body are provided with lateral protrusions, when the abutting rod is initially abutted with the connecting shaft, the pull rod is further pulled, and the lateral protrusions are abutted with the upper end face of the sleeve.
The invention also provides a tissue clamping device which comprises an outer tube, a guy cable and the hemostatic clamp, wherein the connecting shaft is connected between the sleeve and the outer tube, and the guy cable passes through the outer tube and is connected with the pull rod.
The beneficial effects of the invention are as follows:
(1) According to the hemostatic clip push-pull assembly with the lock catch, the hemostatic clip and the tissue clipping device, the elastic lock is arranged on the hemostatic clip body, when the hemostatic clip body is initially closed, the pull rod is still in a connection state with the hemostatic clip body, the elastic lock is controlled to be in a restrained state by the limiting piece, the hemostatic clip body cannot be axially locked, and an operator judges whether the clipping position needs to be readjusted when feeling the hemostatic clip body is closed, so that the accuracy of an operation is improved.
(2) The invention is provided with the abutting rod, when the abutting rod abuts against the connecting shaft, the limiting force of the sleeve on the connecting shaft is further overcome by continuing to pull the pull rod backwards, so that the resistance is increased, and an operator is prompted that the elastic buckle is released, so that the effect of feeding back signals is achieved.
(3) The invention can realize the separation of the pull rod and the hemostatic clip body, the release of the elastic buckle and the separation of the sleeve and the connecting shaft at the same time, has simple and quick operation, and avoids the tissue damage caused by shaking of the device.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a perspective view of a hemostatic clip push-pull assembly with a latch according to the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;
FIG. 4 is a front view of an embodiment of a tissue gripping device according to the present invention;
FIG. 5 is a right side view of an embodiment of a tissue gripping device of the present invention;
FIG. 6 is a cross-sectional view taken along line C-C of FIG. 4 with the hemostatic clip body in an open state;
FIG. 7 is a D-D cross-sectional view of FIG. 5 with the hemostatic clip body in an open state;
FIG. 8 is a C-C cross-sectional view of the hemostatic clip body from the perspective shown in FIG. 4;
FIG. 9 is a D-D cross-sectional view from the perspective shown in FIG. 5, with the hemostatic clip body in a closed state and the pull rod and hemostatic clip body not separated;
FIG. 10 is a C-C cross-sectional view from the perspective of FIG. 4, with the pull rod separated from the hemostatic clip body;
FIG. 11 is a D-D cross-sectional view of the view of FIG. 5 with the pull rod separated from the hemostatic clip body;
FIG. 12 is a view showing the attachment of the hemostatic clip body to the cannula after the hemostatic clip body is released;
fig. 13 is a B-B cross-sectional view of fig. 12.
In the figure, 1, a hemostatic clip push-pull assembly, 2, a hemostatic clip body, 201, a clamping piece, 2011, a first clamping section, 2012, a second clamping section, 202, a C-shaped connecting part, 3, a pull rod, 301, a C-shaped matching part, 302, a rod part, 4, an elastic buckle, 401, a fixed end, 402, a free end, 5, a limiting piece, 6, a clamping hook, 7, a lateral protrusion, 8, a connecting shaft, 801, a limiting shoulder, 802, a groove, 9, a sleeve, 901, a through hole, 902, a flanging, 10, a butt rod, 11, an outer tube, 12 and a inhaul cable.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the invention, one end of the hemostatic clamp body 2 for clamping human tissues is taken as a front end, and one end of the tissue clamping device close to an operator is taken as a rear end.
As shown in fig. 1-3, a hemostatic clip push-pull assembly 1 with a lock catch comprises a hemostatic clip body 2, a pull rod 3 detachably connected with the hemostatic clip body 2, an elastic buckle 4 connected with the hemostatic clip body 2 to form a fixed end 401, and a limiting piece 5 connected with the pull rod 3, wherein a free end 402 of the elastic buckle 4 is provided with a clamping hook 6 capable of being in a free state and a restrained state; when the clamping hook 6 is in a restrained state, the transverse distance from the clamping hook 6 to the central shaft of the hemostatic clamp body 2 is the smallest; when the hook 6 is in a free state, the transverse distance from the hook 6 to the central axis of the hemostatic clamp body 2 is the largest. The lateral distance refers to a distance between the two in a direction perpendicular to the axial direction of the hemostatic clip body 2.
When the pull rod 3 is connected with the hemostatic clip body 2, the limiting piece 5 presses the elastic buckle 4 to enable the clamping hook 6 to be in a restrained state, and when the pull rod 3 is separated from the hemostatic clip body 2, the limiting piece 5 is separated from the elastic buckle 4 to enable the elastic buckle 4 to be in a free state.
The hemostatic clamp body 2 is composed of two clamping pieces 201, the rear ends of the two clamping pieces 201 are connected, the front ends of the two clamping pieces 201 can be mutually far away or close to each other to realize opening and closing of the hemostatic clamp body 2, the pull rod 3 is used for driving the hemostatic clamp body 2 to move back and forth, when the hemostatic clamp body 2 is pushed forward, the hemostatic clamp body 2 can be opened, and when the hemostatic clamp body 2 is pulled backward, the hemostatic clamp body 2 can be closed.
The elastic buckle 4, as the name implies, has elasticity, and the hook 6 on the elastic buckle 4 can reach two different working positions under different conditions due to the elasticity of the elastic buckle 4 and the limitation of the limiting piece 5. When the pull rod 3 is connected with the hemostatic clip body 2, the limiting piece 5 presses the elastic buckle 4, so that the transverse distance between the clamping hook 6 and the central shaft of the hemostatic clip body 2 is reduced, namely, the elastic buckle 4 is pressed towards the central shaft direction. When the pull rod 3 is separated from the hemostatic clip body 2, the elastic buckle 4 can be opened freely, so that the lateral distance between the hook 6 and the central axis of the hemostatic clip body 2 reaches the maximum value, and at this time, the hook 6 can be buckled with a matching structure (the matching structure will be mentioned in the description of the sleeve 9 below).
From the backward movement of the hemostatic clamp body 2 by the sleeve 9 to the separation of the pull rod 3 and the hemostatic clamp body 2, a certain external force needs to be applied, and in the period of time or the earlier stage of the period of time, the limiting piece 5 still presses the elastic buckle 4, namely when an operator feels the backward-pulled abrupt resistance, the clamping hook 6 is still in a constrained state, the hemostatic clamp body 2 is not axially locked, the abrupt resistance can remind the operator, the hemostatic clamp body 2 reaches the backward-moved limit position, the operator can observe whether the closed position is accurate, and if the position is deviated, the hemostatic clamp body 2 can be reversely pushed open for clamping again, so that the clamping precision is ensured.
In addition, since the compression or separation of the limiting piece 5 and the elastic buckle 4 is related to the connection state of the pull rod 3 and the hemostatic clip body 2, that is, the movement of the limiting piece 5 is related to the movement of the pull rod 3, the separation process of the pull rod 3 and the hemostatic clip body 2, that is, the separation process of the limiting piece 5 and the elastic buckle 4 (that is, the release of the elastic buckle 4 or the axial locking process of the hemostatic clip body 2), the synchronous operation of the pull rod 3 and the hemostatic clip body 2 and the axial locking of the hemostatic clip body 2 can be realized, the number of resistance mutation times in the operation process is reduced, the shake of the hemostatic clip in a human body is avoided, and the operation efficiency is improved.
Example 1
The utility model provides a hemostatic clip push-and-pull subassembly 1 with hasp, including hemostatic clip body 2 and with hemostatic clip body 2 separable connection's pull rod 3, hemostatic clip body 2 and pull rod 3's structure and connected mode are the same with prior art, as shown in fig. 1-4, hemostatic clip body 2 comprises two clamping pieces 201, the rear end of two clamping pieces 201 is connected by ductile material and is formed C shape connecting portion 202, under the free state, the front end of two clamping pieces 201 opens, after clamping piece 201 gets into inside sleeve pipe 9, under the spacing of sleeve pipe 9, the front end of two clamping pieces 201 is closed. Each clip 201 comprises a first clip segment 2011 and a second clip segment 2012, which are connected one after the other, the first clip segment 2011 being located at the front end of the second clip segment 2012, and the two second clip segments 2012 being connected by a C-shaped connection 202.
According to one embodiment, the width of the first clip segment 2011 is greater than the width of the second clip segment 2012, so that a lateral protrusion 7 is formed at the rear end of the first clip segment 2011, the lateral protrusion 7 is used for being matched with the front end face of the sleeve 9 to limit the continuous backward movement of the hemostatic clip body 2, when the hemostatic clip body 2 is opened, the two second clip segments 2012 extend out of the sleeve 9, and when the hemostatic clip body 2 is closed, the two second clip segments 2012 retract into the sleeve 9 until the lateral protrusion 7 is abutted with the front end face of the sleeve 9, and at the moment, the two first clip segments 2011 are completely closed to clamp tissues.
According to another embodiment, when the second clip section 2012 is retracted into the sleeve 9, the two first clip sections 2011 are close to each other, the maximum distance between the clamping spaces between the two first clip sections 2011 is not smaller than the outer diameter of the sleeve 9, and the position of the maximum distance is usually adjacent to the connection between the first clip section 2011 and the second clip section 2012, because the position is the position where the second clip section 2012 is most difficult to deform after being accommodated in the sleeve 9, the hemostatic clip body 2 can be limited to continue to move backwards by the outer surface of the connection between the first clip section 2011 and the second clip section 2012, and at this time, the two first clip sections 2011 are already closed to clamp tissues.
The front end of the pull rod 3 is provided with a C-shaped matching part 301 containing the C-shaped connecting part 202, the C-shaped matching part 301 can be deformed and opened, and when the pull rod 3 is pulled continuously after the lateral bulge 7 is abutted with the front end surface of the sleeve 9, the C-shaped matching part 301 is gradually opened and separated from the C-shaped connecting part 202.
The embodiment also comprises an elastic buckle 4 connected with the hemostatic clip body 2 to form a fixed end 401 and a limiting piece 5 connected with the pull rod 3, wherein the limiting piece 5 is used for limiting the elastic buckle 4 to open, and the free end 402 of the elastic buckle 4 is provided with a clamping hook 6 which can be in a free state and a restrained state; when the clamping hook 6 is in a restrained state, the transverse distance from the clamping hook 6 to the central shaft of the hemostatic clamp body 2 is the smallest; when the hook 6 is in a free state, the transverse distance from the hook 6 to the central axis of the hemostatic clamp body 2 is the largest. The lateral distance refers to a distance between the two in a direction perpendicular to the axial direction of the hemostatic clip body 2.
The pull rod 3 and the hemostatic clip body 2 move inside the sleeve 9, when the hemostatic clip body 2 is released, only the hemostatic clip body 2 and the sleeve 9 are left in the human body, so that the hemostatic clip body 2 is axially locked through the sleeve 9, when the transverse distance from the clamp hook 6 to the central shaft of the hemostatic clip body 2 is controlled to be a smaller value, the clamp hook 6 cannot be blocked by the sleeve 9, the hemostatic clip body can move randomly in the sleeve 9, when the transverse distance from the clamp hook 6 to the central shaft of the hemostatic clip body 2 is larger, the clamp hook 6 can reach the side wall of the sleeve 9 and is buckled with a matched structure on the sleeve 9, and accordingly the hemostatic clip body 2 is limited to move reversely and open. When the pull rod 3 is connected with the hemostatic clip body 2, the limiting piece 5 presses the elastic buckle 4 to enable the clamping hook 6 to be in a restrained state, and when the pull rod 3 is separated from the hemostatic clip body 2, the limiting piece 5 is separated from the elastic buckle 4 to enable the elastic buckle 4 to be in a free state.
One or more free ends 402 of the elastic buckle 4 may be provided, and the fixed end 401 of the elastic buckle 4 is close to the central axis, and in a free state, the free end 402 of the elastic buckle 4 is opened outwards from the fixed end 401. To ensure uniform stress, the elastic clasp 4 in this embodiment is provided with two free ends 402. As shown in fig. 1 and 3, the elastic buckle 4 has a U-shaped structure, the fixed end 401 of the elastic buckle 4 is located in the middle of the elastic buckle 4 and keeps horizontal, free ends 402 are formed on two sides of the elastic buckle 4, a hook 6 is respectively disposed at each free end 402, the limiting member 5 is a pressing plate pressed on two sides of the elastic buckle 4, the limiting member 5 cannot deform, and when the limiting member 5 is pressed on the surface of the free end 402, the free end 402 of the elastic buckle 4 can deform.
The elastic buckle 4 may be disposed on the C-shaped connection portion 202 or the clip 201 of the hemostatic clip body 2, and the elastic buckle 4 needs to be located inside the sleeve 9 during the opening or closing of the hemostatic clip body 2. In order to avoid the excessive movement of the fixed end 401 of the elastic buckle 4 in the radial direction of the sleeve 9, in this embodiment, the fixed end 401 of the elastic buckle 4 is preferably disposed on the C-shaped connecting portion 202, when the limiting member 5 is pressed on the outer side of the free end 402, the free end 402 of the elastic buckle 4 is approximately vertical and perpendicular to the fixed end 401 of the elastic buckle 4, since the elastic buckle 4 is located on the hemostatic clip body 2, the limiting member 5 is located on the pull rod 3, and when the pull rod 3 is separated from the hemostatic clip body 2, the limiting member 5 is also separated from the elastic buckle 4, and at this time, the free end 402 of the elastic buckle 4 is laterally opened.
As shown in fig. 1 and 3, the pull rod 3 includes a columnar rod portion 302, the limiting member 5 is also approximately in a U-shaped structure, the middle portion of the limiting member 5 is horizontally fixed on the front end surface of the rod portion 302, two sides of the limiting member 5 are pressed against the free end 402 of the elastic buckle 4, and the c-shaped matching portion 301 is fixed on the limiting member 5.
The hook 6 is used for being buckled with a matching structure on the sleeve 9 to inhibit the forward movement of the hemostatic clamp body 2, the hook 6 can be a barb which is folded laterally, and preferably, the opening direction of the hook 6 is opposite to the movement direction of the pull rod 3 when leaving the hemostatic clamp body 2. I.e. the opening of the hook 6 is directed forward, so that unhooking can be effectively avoided.
Example two
A hemostatic clip, as shown in fig. 1, 4-6, comprises a sleeve 9 and the hemostatic clip push-pull assembly 1 with a lock catch; the hemostatic clip body 2 is partially positioned within the sleeve 9, and when the hemostatic clip body 2 is moved rearward, the sleeve 9 forces the hemostatic clip body 2 to assume a closed and collapsed state and inhibits the hemostatic clip body 2 from continuing to move inwardly of the sleeve 9. The front end of pull rod 3 is connected with hemostatic clamp body 2, and the rear end of pull rod 3 stretches out from the rear end of sleeve pipe 9, and sleeve pipe 9's week side has the through-hole 901 with trip 6 complex, and when trip 6 was in the free state, trip 6 hook was on through-hole 901, and through-hole 901 can be the groove type structure (i.e. does not link up to the lateral surface of sleeve pipe 9) also can be the poroid structure.
The diameter of the pull rod 3 is smaller than the inner diameter of the sleeve 9, so that the pull rod 3 can move linearly along the axial direction, and preferably, the hemostatic clip further comprises a connecting shaft 8 positioned in the sleeve 9, a shaft hole for the pull rod 3 to pass through is formed in the center of the connecting shaft 8, and the pull rod 3 can drive the connecting shaft 8 to move backwards. The connecting shaft 8 is attached to the inner wall of the sleeve 9, preferably the connecting shaft 8 is arranged at the rear end of the sleeve 9, and the shaft hole ensures the linear motion of the pull rod 3.
The traditional connecting shaft 8 is provided with a groove 802 at the front end, the pull rod 3 moves backwards to be abutted with the inner bottom surface of the groove 802, the traditional connecting shaft 8 is adopted in the invention, in order to prevent the clamping hook 6 from sinking into the groove 802, the connecting shaft 8 is positioned behind the through hole 901 when being positioned in the sleeve 9, and when the hemostatic clamp body 2 is abutted with the front end surface of the sleeve 9, the clamping hook 6 reaches the axial position of the through hole 901, and the clamping hook 6 cannot move backwards to the groove 802.
The operating state process of this embodiment is: the hemostatic clamp body 2 is firstly abutted with the front end face of the sleeve 9, then the pull rod 3 is separated from the hemostatic clamp body 2, meanwhile, the limiting piece 5 is released to elastically buckle 4, the clamping hook 6 is buckled with the through hole 901, and finally the connecting shaft 8 is separated from the sleeve 9 to release the hemostatic clamp body 2 and the sleeve 9. The minimum distance from the free end 402 of the elastic buckle 4 to the front end surface of the connecting shaft 8 and the minimum distance from the abutting surface of the pull rod 3 and the connecting shaft 8 to the front end surface of the connecting shaft 8 (i.e., the minimum distance from the limiting member 5 to the front end surface of the connecting shaft 8) are not particularly limited.
Example III
In the above embodiment, when the hemostatic clip body 2 reaches the closed state and abuts against the end surface of the sleeve 9, the connection portion between the pull rod 3 and the hemostatic clip body 2 is pulled, and the pull rod 3 and the hemostatic clip body 2 may be instantaneously separated, so that the elastic buckle 4 is locked, or the C-shaped mating portion 301 of the pull rod 3 may be opened partially, and if the hemostatic clip body 2 is pushed forward, the hemostatic clip body 2 may be separated from the pull rod 3, so that the hemostatic clip body 2 remains in the human body in the opened state, and at this time, the hemostatic clip body 2 is difficult to be taken out, which may cause serious surgical errors. For this reason, the present embodiment is modified as follows on the basis of the above embodiment:
on the basis of the second embodiment, the sleeve 9 and the connecting shaft 8 are provided with mutually matched axial limiting structures, and the axial limiting structures can inhibit the connecting shaft 8 from being separated from the sleeve 9 backwards; the axial limit structure can fail under the pulling force of the pull rod 3 so that the connecting shaft 8 is separated from the sleeve 9 backwards. When the abutting time of the pull rod 3 and the connecting shaft 8 is earlier than the separating time of the pull rod 3 and the hemostatic clamp body 2, an operator can feel resistance increase when the pull rod 3 abuts against the connecting shaft 8, and at the moment, the pull rod 3 and the hemostatic clamp body 2 are predicted to be separated, and the operator can observe whether the closing position is accurate or not and whether the clamping position needs to be readjusted or not.
Compared with the embodiment, when the embodiment is adopted for operation, even if the pulling force is slightly larger, the axial limiting structure is only damaged first, the pulling force does not directly act on the C-shaped matching part 301, and the separation of the sleeve 9 and the connecting shaft 8 does not affect the repeated opening and closing of the hemostatic clip body 2.
The connecting shaft 8 is limited in the sleeve 9 by the axial limiting structure, under the condition of small pulling force, the connecting shaft 8 cannot be separated from the sleeve 9 backwards, the axial limiting structure can be a reducing circumferential contact surface of the connecting shaft 8 and the sleeve 9, and the axial limiting structure in the embodiment is as follows: the outer peripheral surface of the connecting shaft 8 is provided with a limit shoulder 801, the rear end surface of the sleeve 9 is provided with a flange 902 which is abutted with the limit shoulder 801 and inhibits the connecting shaft 8 from being separated from the sleeve 9, and the flange 902 can deform under the action of external force so that the connecting shaft 8 can be separated from the sleeve 9.
Preferably, the outer circumferential surface of the pull rod 3 is also connected with a supporting rod 10, and when the supporting rod 10 is initially contacted with the connecting shaft 8, the pull rod 3 is not separated from the hemostatic clip body 2. The abutting time of the pull rod 3 and the connecting shaft 8 is earlier than the separation time of the pull rod 3 and the hemostatic clamp body 2 through the design of the abutting rod 10. That is, the minimum distance from the free end 402 of the elastic buckle 4 to the front end surface of the connecting shaft 8 is greater than the minimum distance from the abutting surface of the pull rod 3 and the connecting shaft 8 to the front end surface of the connecting shaft 8 (that is, the minimum distance from the abutting rod 10 to the front end surface of the connecting shaft 8). When the lateral protrusion 7 is provided, the abutting rod 10 is abutted with the connecting shaft 8, and after the pull rod 3 is pulled further, the lateral protrusion 7 is abutted with the upper end face of the sleeve 9.
The operation process of the embodiment is as follows: the hemostatic clamp body 2 moves backwards from the open state, during the movement, the abutting rod 10 is firstly abutted against the end face of the connecting shaft 8, the connecting shaft 8 moves backwards simultaneously with the pull rod 3 after being stressed, then the hemostatic clamp body 2 is abutted against the end face of the sleeve 9, at the moment, the hemostatic clamp body 2 reaches a backward movement limit position, then the pull rod 3 is continuously pulled backwards until the C-shaped matching part 301 is opened, the pull rod 3 is separated from the hemostatic clamp body 2, and during the movement, the connecting shaft 8 also moves backwards gradually until being separated from the sleeve 9.
In the process, the hemostatic clip is subjected to the following states in sequence:
(1) The hemostatic clip body 2 is in an open state, as shown in fig. 6, the C-shaped matching part 301 is not open, the pull rod 3 is connected with the hemostatic clip body 2, the flange 902 is in a bent state, the flange 902 is abutted with the limit shoulder 801, the connecting shaft 8 is not separated from the sleeve 9, as shown in fig. 7, the abutting rod 10 is not contacted with the inner bottom surface of the groove 802, and the limit piece 5 is pressed on the free end 402.
(2) The hemostatic clip body 2 is in a closed state, the pull rod 3 is not separated from the hemostatic clip body 2, as shown in fig. 8, the C-shaped matching part 301 is not opened, the pull rod 3 is connected with the hemostatic clip body 2, the flange 902 is in a bent state, the flange 902 is abutted with the limit shoulder 801, the connecting shaft 8 is not separated from the sleeve 9, as shown in fig. 9, the abutting rod 10 is abutted with the inner bottom surface of the groove 802, and the limit piece 5 is pressed on the free end 402.
(3) The pull rod 3 is separated from the hemostatic clip body 2. As shown in fig. 10, the C-shaped mating portion 301 is opened, the pull rod 3 is separated from the hemostatic clip body 2, the flange 902 is straightened, the connecting shaft 8 can be separated from the sleeve 9 backward, as shown in fig. 11, the abutting rod 10 abuts against the inner bottom surface of the groove 802, and the stopper 5 is separated from the free end 402.
As shown in fig. 12 and 13, the hemostatic clip is in a structure that the hemostatic clip is left in a human body after being released, and as shown in fig. 13, when the limiting member 5 leaves the free end 402, the free end 402 is opened, and the hook 6 is clamped on the through hole 901, so that the hemostatic clip body 2 cannot be opened by forward movement.
After setting up the butt pole 10, when the closed in-process of hemostatic clamp body 2 backward motion, butt pole 10 at first with connecting axle 8 butt, the junction of pull rod 3 and hemostatic clamp body 2 does not receive the pulling force effect this moment, and both can not break away from, and abrupt resistance at this moment can produce first feedback signal with vibration or acoustic mode, reminds the operator, and hemostatic clamp body 2 is about to reach the extreme position of backward movement, and whether the operator can observe the closed position accurate. When the closing position is accurate, the abutting rod 10 is abutted with the connecting shaft 8 at this moment, and the pull rod 3 is pulled continuously, so that the lateral bulge 7 is abutted with the front end face of the sleeve 9, and the second feedback signal is triggered and generated at this moment, so that the operator is reminded that the standard of releasing the hemostatic clamp body 2 is reached, the acting pulling force is further increased, the C-shaped matching part 301 is deformed and opened, and the third feedback signal is generated so as to remind the operator that the pull rod 3 and the hemostatic clamp body 2 are separated.
Therefore, the improvement of the embodiment can avoid that the pull rod 3 is separated from the hemostatic clamp body 2 when the hemostatic clamp body 2 reaches the backward movement limit position due to overlarge pulling force, so that the clamping position cannot be repeatedly adjusted.
In addition, since the connection shaft 8 starts to be separated from the sleeve 9 when the abutting rod 10 of the present embodiment abuts against the end surface of the connection shaft 8, the separation of the connection shaft 8 from the sleeve 9, the separation of the pull rod 3 from the hemostatic clip body 2 and the axial locking of the hemostatic clip body 2 can be completed simultaneously, and compared with the first embodiment, the operation convenience is better, and the operation feeling of the patient is more comfortable.
Example IV
The tissue clamping device comprises an outer tube 11, a stay rope 12 and the hemostatic clamp, wherein the outer tube 11 is connected with the connecting shaft 8, and the stay rope 12 penetrates through the outer tube 11 to be connected with the pull rod 3. The rear end of the stay rope 12 is provided with a handle by which the forward and backward movement of the pull rod 3 is controlled. The outer tube 11 is typically a flexible spring tube.
In the description of the present invention, it should be understood that the terms "center", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In this specification, a schematic representation of the terms does not necessarily refer to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. The utility model provides a hemostatic clamp push-and-pull subassembly with hasp, includes hemostatic clamp body (2) and pull rod (3) of separable connection with hemostatic clamp body (2), its characterized in that: the hemostatic clip further comprises an elastic buckle (4) connected with the hemostatic clip body (2) and provided with a fixed end (401) and a limiting piece (5) connected with the pull rod (3), wherein the free end (402) of the elastic buckle (4) is provided with a clamping hook (6) capable of being switched between a free state and a constrained state; when the clamping hook (6) is in a restrained state, the transverse distance from the clamping hook (6) to the central shaft of the hemostatic clamp body (2) is the smallest; when the clamping hook (6) is in a free state, the transverse distance from the clamping hook (6) to the central shaft of the hemostatic clamp body (2) is the largest;
when the pull rod (3) is connected with the hemostatic clamp body (2), the limiting piece (5) presses the elastic buckle (4) to enable the clamping hook (6) to be in a constrained state, and when the pull rod (3) is separated from the hemostatic clamp body (2), the limiting piece (5) is separated from the elastic buckle (4) to enable the elastic buckle (4) to be in a free state.
2. The hemostatic clip push-pull assembly with lock catch according to claim 1 wherein: the elastic buckle (4) is of a U-shaped structure, the fixed end (401) of the elastic buckle (4) is located in the middle of the elastic buckle (4), free ends (402) are formed on two sides of the elastic buckle (4), and a clamping hook (6) is arranged at each free end (402).
3. The hemostatic clip push-pull assembly with lock catch according to claim 2 wherein: the limiting piece (5) is a pressing plate pressed on two sides of the elastic buckle (4).
4. The hemostatic clip push-pull assembly with lock catch according to claim 2 wherein: the hemostatic clip comprises a hemostatic clip body (2) and is characterized in that the end part of the hemostatic clip body (2) connected with a pull rod (3) is provided with a C-shaped connecting part (202), the end part of the pull rod (3) is provided with a C-shaped matching part (301) containing the C-shaped connecting part (202), the C-shaped matching part (301) can be deformed and opened, and the elastic buckle (4) is arranged on the C-shaped connecting part (202).
5. A hemostatic clip, characterized in that: comprising a sleeve (9), a connecting shaft (8) positioned in the sleeve (9) and the hemostatic clip push-pull assembly with lock catch according to any one of claims 1-4; the hemostatic clamp comprises a hemostatic clamp body (2), a sleeve (9) and a connecting shaft (8), wherein the hemostatic clamp body (2) is partially positioned in the sleeve (9), when the hemostatic clamp body (2) moves backwards, the sleeve (9) forces the hemostatic clamp body (2) to be in a clamped and folded state, the center of the connecting shaft (8) is provided with a shaft hole for a pull rod (3) to pass through, and the pull rod (3) can drive the connecting shaft (8) to move backwards;
the circumference of the sleeve (9) is provided with a through hole (901) matched with the clamping hook (6), and when the clamping hook (6) is in a free state, the clamping hook (6) is hooked on the through hole (901).
6. A hemostatic clip according to claim 5 wherein: the sleeve (9) and the connecting shaft (8) are provided with mutually matched axial limiting structures, and the axial limiting structures can inhibit the connecting shaft (8) from being separated from the sleeve (9) backwards;
the axial limiting structure can fail under the tensile force of the pull rod (3) so that the connecting shaft (8) is separated from the sleeve (9) backwards.
7. A hemostatic clip according to claim 6 wherein: the outer peripheral surface of the pull rod (3) is also connected with a supporting rod (10), and when the supporting rod (10) is initially abutted with the connecting shaft (8), the pull rod (3) is not separated from the hemostatic clamp body (2).
8. A hemostatic clip according to claim 6 wherein: the outer peripheral surface of the connecting shaft (8) is provided with a limit shoulder (801), and the rear end surface of the sleeve (9) is provided with a flanging (902) which is abutted with the limit shoulder (801) and inhibits the connecting shaft (8) from being separated from the sleeve (9); the limiting shoulder (801) and the flanging (902) form an axial limiting structure;
the flange (902) can be deformed under the extrusion force of the limit shoulder (801) so that the connecting shaft (8) can be separated from the sleeve (9).
9. A hemostatic clip according to claim 7 wherein: the hemostatic clip is characterized in that lateral protrusions (7) are arranged on the sides of two clamping pieces (201) of the hemostatic clip body (2), when the abutting rod (10) is initially abutted with the connecting shaft (8), the pull rod (3) is further pulled, and the lateral protrusions (7) are abutted with the upper end face of the sleeve (9).
10. A tissue clamping device, characterized in that: comprises an outer tube (11), a stay cable (12) and a hemostatic clip as claimed in any one of claims 5-9, wherein a connecting shaft (8) is connected between the sleeve (9) and the outer tube (11), and the stay cable (12) passes through the outer tube (11) to be connected with the pull rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310225454.8A CN116458954B (en) | 2023-03-10 | 2023-03-10 | Hemostatic clip push-pull assembly with lock catch, hemostatic clip and tissue clamping device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310225454.8A CN116458954B (en) | 2023-03-10 | 2023-03-10 | Hemostatic clip push-pull assembly with lock catch, hemostatic clip and tissue clamping device |
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| CN116458954A true CN116458954A (en) | 2023-07-21 |
| CN116458954B CN116458954B (en) | 2024-01-30 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110464410A (en) * | 2019-07-03 | 2019-11-19 | 安瑞医疗器械(杭州)有限公司 | The clamp apparatus and its clamping part that cooperation endoscope uses |
| US20200113573A1 (en) * | 2017-06-16 | 2020-04-16 | Hangzhou Ags Medtech Co., Ltd. | Ligation device, unlocking method and ligation instrument |
| CN217447914U (en) * | 2022-01-24 | 2022-09-20 | 江苏唯德康医疗科技有限公司 | Limiting assembly for clamping tissue and hemostatic clamp |
| CN218419950U (en) * | 2022-01-24 | 2023-02-03 | 江苏唯德康医疗科技有限公司 | Hemostatic clamp body for clamping tissue and hemostatic clamp |
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2023
- 2023-03-10 CN CN202310225454.8A patent/CN116458954B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200113573A1 (en) * | 2017-06-16 | 2020-04-16 | Hangzhou Ags Medtech Co., Ltd. | Ligation device, unlocking method and ligation instrument |
| CN110464410A (en) * | 2019-07-03 | 2019-11-19 | 安瑞医疗器械(杭州)有限公司 | The clamp apparatus and its clamping part that cooperation endoscope uses |
| CN217447914U (en) * | 2022-01-24 | 2022-09-20 | 江苏唯德康医疗科技有限公司 | Limiting assembly for clamping tissue and hemostatic clamp |
| CN218419950U (en) * | 2022-01-24 | 2023-02-03 | 江苏唯德康医疗科技有限公司 | Hemostatic clamp body for clamping tissue and hemostatic clamp |
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| CN116458954B (en) | 2024-01-30 |
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