CN217907915U - Automatic synchronous puncture clamp - Google Patents

Abstract

The application discloses automatic synchronous puncture clamp includes: the control handle is provided with a first driving assembly and a second driving assembly; the clamp assembly is controlled by the first driving assembly and is provided with two clamp arms which are matched with each other, the two clamp arms are matched with each other in a rotating mode around an axis, each clamp arm is provided with a working part and a transmission part, and a clamping area is formed between the two clamp arms; the puncture knife is controlled by the second driving component; the puncture knife is provided with a puncture position and an initial position; the working parts of the two clamp arms are provided with a closing position and an opening position which are opposite; under the opening position, the transmission parts of the two forceps arms interfere with the motion path of the puncture knife. The technical scheme that this application discloses combines through the motion process of two tong arms and the motion process of puncture sword, can improve the linkage degree of each part of puncture clamp when improving puncture sword safety in utilization to improve actual use impression and treatment.

Description

Automatic synchronous puncture clamp

Technical Field

The application relates to the field of medical instruments, in particular to an automatic synchronous puncture clamp.

Background

The endoscope clamp is a surgical instrument which is often used in laparoscopic and thoracoscopic operations, such as non-invasive grasping forceps, needle holding forceps and the like; the main purpose is to achieve the purpose of operation through a minimally invasive operation mode. For example, chinese patent publication No. CN211381619U discloses an endoscopic forceps, which includes: the clamp comprises a clamp body, a conduit and a clamping part.

With the progress of treatment means, medical workers find that the existing endoscopic clamp has too single function and can not realize multiple functions in a single-hole cavity. For example, the atraumatic forceps can only grasp tissue and cannot observe, cut and release guide wires. For example, in an operation requiring operation on a pericardium, the pericardium needs to be cut to realize guide wire intervention, and the prior art cannot meet the clinical requirement.

For example, chinese patent publication No. CN102458291A discloses a surgical tool assembly for use in electrosurgery comprising an elongated housing movable in a longitudinal direction. The assembly includes a pair of jaws, each having a plurality of teeth for grasping tissue and a support element supporting the plurality of teeth. The support member is partially disposed within the housing and extends to a distal end disposed outside of the housing.

The inventor believes that there is still room for improvement in the prior art solutions.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application discloses automatic synchronous puncture clamp includes:

the control handle is provided with a first driving assembly and a second driving assembly;

the clamp assembly is arranged on the control handle and controlled by the first driving assembly, and a mounting channel extending from the proximal end to the distal end is arranged in the clamp assembly; the far end of the clamp component is provided with two clamp arms which are matched with each other, the two clamp arms are matched with each other in a rotating way around an axis, each clamp arm is provided with a working part at one side of the axis and a transmission part at the other end, and a clamping area is arranged between the working parts of the two clamp arms;

the puncture knife is movably arranged in the mounting channel and is controlled by the second driving component; the far end of the puncture knife is provided with a puncture position extending into the clamping area and an initial position withdrawing from the clamping area;

the working parts of the two clamp arms are provided with a closing position and an opening position which are opposite; under the opening position, the transmission parts of the two forceps arms interfere with the motion path of the puncture knife.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative may be combined individually for the above general solution or between several alternatives without technical or logical contradictions.

Optionally, under the opening position, the transmission parts of the two forceps arms are respectively located at two sides of the puncture knife and clamp and position the puncture knife.

The arrangement has the advantages that the puncture knife can be positioned under the opening positions of the two clamps, so that the damage caused by the displacement of the puncture knife 3 is avoided; can also be used for improving the puncture precision of the puncture knife during puncture.

Optionally, under the opening position, a gap between the transmission parts of the two forceps arms is smaller than or equal to the width of the puncture knife so as to prevent the puncture knife from entering the clamping area.

The advantage of this mode of setting up lies in can avoiding puncturing the sword under two tong arm open position to advance the clamping area to bring the safety risk.

Optionally, the transmission portion include certainly the transmission arm that the work portion extends to the near-end with in the synchronization portion of transmission arm linkage, the synchronization portion along with the transmission arm motion have in puncture sword lateral edge interact's interference position and keep away from the release position of puncture sword lateral edge.

The synchronizing part can be the structure of the transmission part or a separate component.

Optionally, the synchronizing portions on the two forceps arms are oppositely arranged and respectively located on two sides of the puncture knife.

Optionally, the synchronizing portion is a synchronizing stop fixed on the transmission arm, and the synchronizing stop of one tong arm abuts against the transmission arm of the other tong arm in the axial direction of the rotating shaft in the state of rotating fit of the two tong arms.

Optionally, the two forceps arms are in running fit through the forceps shaft, the forceps shaft comprises a first half shaft and a second half shaft which are coaxially arranged, a knife passing gap is formed between the first half shaft and the second half shaft, and the puncture knife enters the puncture position through the knife passing gap.

Optionally, in the axial direction of the two forceps arms in rotating fit, the middle of each forceps arm is provided with a guide groove, the guide groove extends from the proximal end side to the distal end side of the forceps arm, and the lateral edges of the puncture knife located at the puncture position are respectively located in the guide grooves of the two forceps arms.

Optionally, the piercing forceps comprise:

the proximal end of the supporting tube is connected to the control handle, and the distal end of the supporting tube is provided with a forceps shaft;

the driving pipe is slidably mounted in the supporting pipe, the near end of the driving pipe is linked with the first driving assembly, and each transmission part of the clamping assembly is linked with the driving pipe;

the supporting tube is rotatably installed with the control handle, and the puncture knife is in linkage with the supporting tube in the circumferential direction.

The rotation synchronization of the puncture knife 3 and the clamp assembly 2 is realized through the circumferential linkage of the puncture knife and the supporting tube, the use safety of the puncture clamp is improved while a structural basis is provided for freely adjusting the angle of the clamp arm, and the damage and the use risk of a device caused by misoperation are avoided.

Optionally, a synchronous sleeve is arranged inside the distal end of the driving tube, the synchronous sleeve is fixedly connected with the driving tube and is provided with an incision, the puncture knife located at the initial position is located in the synchronous sleeve, and the puncture knife enters the puncture position through the incision.

The synchronous sleeve pipe direct action is in puncture sword distal end, therefore synchronous effect is more stable and accurate, avoids because the synchronous deviation that the part transmission leads to, and the pipe diameter of each position can further be optimized simultaneously.

Optionally, the second driving assembly includes an operating member linked with the proximal end of the puncture knife, and in the axial direction of the puncture knife, the end portion of the proximal end of the puncture knife and the end portion of the distal end of the operating member are axially abutted and circumferentially released.

The puncture knife and the operating part are axially abutted and circumferentially released to release the circumferential movement stroke of the puncture knife relative to the control handle, and a structural basis is provided for the synchronous movement of the puncture knife and other parts on the premise of ensuring the driving effect of the puncture knife.

The technical scheme that this application discloses combines through the motion process of two tong arms and the motion process of puncture sword, can improve the linkage degree of each part of puncture clamp when improving puncture sword safety in utilization to improve actual use impression and treatment.

Specific advantageous technical effects will be further explained in conjunction with specific structures or steps in the detailed description.

Drawings

FIG. 1 is a schematic view of an embodiment of a piercing clamp;

FIG. 2 is a schematic view of the interior of the piercing clamp of FIG. 1 in cross-section;

FIG. 3 is a cross-sectional view of the internal structure of the distal portion of the piercing clip of FIG. 1;

FIG. 4 is a schematic illustration of the two jawarms of the jawset assembly in one embodiment;

FIG. 5 is a schematic view of the open position of the jawarms of FIG. 4;

FIG. 6 is a schematic view of the closed position of the jawarms of FIG. 4;

FIG. 7 is an assembly view of the first drive assembly of FIG. 1;

FIG. 8 is a perspective view of the piercing pliers of FIG. 1;

FIG. 9 is a schematic view of the internal assembly of the control handle of the piercing pliers of FIG. 8;

FIG. 10 is an internal cross-sectional view of the piercing clamp of FIG. 8;

FIG. 11 is an enlarged proximal end view of the second drive assembly of the piercing jaw of FIG. 8;

FIG. 12 is an exploded view of the tubular members of the piercing pliers of FIG. 1;

FIG. 13 is a schematic view of the distal configuration of the support tube and drive tube of FIG. 12;

FIG. 14 is a schematic view of the jaw assembly open position of the piercing jaws of FIG. 1;

FIG. 15 is a schematic illustration of the positional relationship of the internal components of the control handle of the piercing forceps of FIG. 14;

FIG. 16 is a schematic view of the jaw assembly of FIG. 1 in a closed position;

FIG. 17 is a schematic view of the state of the second driving assembly when the lancet is in the puncturing position;

FIG. 18 is a schematic view of the clamp assembly of FIG. 1 in an open position;

FIG. 19 is a schematic view of the piercing clamp of FIG. 1 from a front view of the clamp assembly;

FIG. 20 is an enlarged view of the clamp assembly of FIG. 19.

The reference numerals in the figures are illustrated as follows:

1. a control handle;

11. a first drive assembly; 111. driving the rocker arm; 1111. a drive section; 1112. a force application part; 1113. a drive slot; 112. a first locking assembly; 1121. a ratchet; 1122. a pawl; 1123. locking the elastic member; 1124. a lock release member; 113. a fixed arm; 114. a holder;

12. a second drive assembly; 121. a reset member; 122. an operating member; 1221. an operating housing; 1222. an operating lever; 1223. a first plane of rotation;

131. a first sealed interface; 132. a second sealed interface; 133. a control room; 1331. a first chamber; 1332. a second chamber;

2. a clamp assembly;

21. supporting a tube; 211. a clamp shaft; 2111. a first half shaft; 2112. a second half shaft; 2113. a blade passing gap; 212. a rotating sleeve;

22. a drive tube; 224. a synchronous sleeve; 2241. a synchronization channel; 225. a drive member;

23. a clamp arm; 231. a working part; 2311. a recessed region; 2312. an accommodating space; 2313. a clamping section; 2314. an accommodating section; 2315. a connection section; 2316. a clamping gap; 232. a transmission part; 2321. a transmission arm; 2322. a synchronization section; 233. a clamping area; 234. a guide groove;

3. a puncture knife; 31. a puncture section; 32. a control tube; 321. a control unit; 322. a second plane of rotation;

4. an endoscope assembly; 41. an endoscope tube; 42. guiding a pipeline; 421. bending; 43. a fitting pipe; 44. and (4) an engaging arm.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

With reference to fig. 1-20, the present application discloses an automatically synchronized lancing clamp, comprising:

the control device comprises a control handle 1, wherein a first driving assembly 11 and a second driving assembly 12 are arranged on the control handle 1;

the clamp assembly 2 is arranged on the control handle 1 and controlled by the first driving assembly 11, and an installation channel extending from the near end to the far end is arranged in the clamp assembly 2; the distal end of the clamp assembly 2 has two cooperating jawarms 23, the two jawarms 23 being rotationally engaged with each other about an axis (which may be realized by a jawset 211 as mentioned below, the axis here being understood as a spatially equivalent axis, and not a specific shaft member), each jawarms 23 having a working portion 231 on one side of the axis and a transmission portion 232 on the other end, a clamping area 233 being provided between the working portions 231 of the two jawarms 23;

the puncture knife 3 is movably arranged in the installation channel and is controlled by a second driving component 12; the distal end of the puncture knife 3 has a puncture position extending into the holding region 233 and an initial position withdrawn from the holding region 233;

the working parts 231 of the two clamp arms 23 have opposite closing positions and opening positions; in the open position, the transmission portions 232 of the two forceps arms 23 interfere with the movement path of the puncture blade 3.

The jaw assembly 2 is used to clamp a target object or tissue, for example, a pericardium which needs to be operated during a treatment, and the puncture blade 3 can perform a work on the object clamped by the jaw assembly 2. In the operation step, the clamping action and the puncture action can be respectively implemented and possibly simultaneously implemented, in order to avoid unnecessary damage to the puncture knife 3 under special conditions, the motion process of the two clamp arms 23 and the motion process of the puncture knife 3 are combined, so that the use safety of the puncture knife 3 can be improved, and the linkage degree of all parts of the puncture clamp can be improved, thereby improving the actual use feeling and the treatment effect.

The puncture knife 3 is movably installed in an installation channel so as to perform puncture operation on an object clamped by the clamp assembly 2, wherein the installation channel is arranged in a pipeline of the installation clamp assembly 2 and extends in the axial direction. In the embodiment shown in the figures, the installation passage is realized by the tube inner space of the drive tube 22.

In terms of the specific interference manner between the transmission portion 232 and the puncture knife 3, in an embodiment, in the open position, the transmission portions 232 of the two forceps arms 23 are respectively located at two sides of the puncture knife 3 and clamp and position the puncture knife 3. The arrangement has the advantages that the puncture knife 3 can be positioned at the opening positions of the two clamps, so that damage caused by displacement of the puncture knife 3 is avoided; and also can be used for improving the puncture accuracy of the puncture blade 3 during puncture.

In another embodiment, the gap between the driving portions 232 of the two forceps arms 23 is smaller than or equal to the width of the puncture knife 3 in the open position to block the puncture knife 3 from entering the holding region 233. In this embodiment, the gap between the transmission portions 232 of the two clamp arms 23 mainly refers to the distance between the two clamp arms 23 in the opening or closing direction. This arrangement has the advantage that it avoids the piercing knife 3 entering the clamping area 233 in the open position of the two jawarms 23, thereby posing a safety risk.

As two interference principles with different dimensions, the above two manners may be implemented simultaneously, for example, referring to fig. 5, the gap between the driving portions 232 of the two forceps arms 23 is less than or equal to the width of the puncture blade 3 to block the puncture blade 3 from entering the clamping area 233, and in fig. 6, as the two forceps arms 23 are opened by a predetermined angle, the driving portions 232 of the two forceps arms 23 may also be respectively located at both sides of the puncture blade 3 to clamp and position the puncture blade 3. Of course, the above-described modes can also be implemented independently.

In the specific interfering component, the transmission part 232 may be a self-structure of the transmission part 232, or may be a separate component, and referring to an embodiment, the transmission part 232 includes a transmission arm 2321 extending from the working part 231 to the proximal end and a synchronization part 2322 linked with the transmission arm 2321, and the synchronization part 2322 has an interfering position interacting with the lateral edge of the puncture knife 3 and a releasing position away from the lateral edge of the puncture knife 3 as the transmission arm 2321 moves. In the drawing, the synchronizing portions 2322 of the two forceps arms 23 are provided to face each other and are located on both sides of the piercing cutter 3. The synchronizing portion 2322 is a synchronizing stopper fixed to the transmission arm 2321, and in the state where the two caliper arms 23 are rotationally engaged and in the axial direction of the rotation shaft, the synchronizing stopper of one caliper arm 23 abuts against the transmission arm 2321 of the other caliper arm 23. The synchronous stopper can be understood to be mutually clamped by the two clamp arms 23 in the axial direction of the rotating shaft to a certain extent, so that the interference effect on the puncture knife 3 can be more stably realized.

In addition to the interaction of the sync 2322 with the penetration blade 3, other components of the jaw assembly 2 are in mating relationship with the penetration blade 3 as well.

For example, in the present application, the puncture blade 3 is slidably mounted in the drive tube 22, and as can be seen from the drawings, the puncture blade 3 enters the puncture site from within the formed jaws of the two forceps arms 23. In order to overcome the interference of the forceps shaft 211 with the motion path of the puncture knife 3, a special-shaped shaft can be selected, i.e. the axial extension path of the shaft is changed to avoid the interference, and in an embodiment, the two forceps arms 23 are rotatably matched through the forceps shaft 211, the forceps shaft 211 comprises a first half shaft 2111 and a second half shaft 2112 which are coaxially arranged, an over-knife gap 2113 is formed between the first half shaft 2111 and the second half shaft 2112, and the puncture knife 3 enters the puncture site through the over-knife gap 2113. In order to further improve the engagement effect between the forceps arms 23 and the puncture knife 3, a guide groove 234 is provided in the middle of each forceps arm 23 in the axial direction in which the forceps arms 23 are rotatably engaged, the guide groove 234 extends from the proximal end side to the distal end side of the forceps arm 23, and the side edges of the puncture knife 3 at the puncture site are respectively located in the guide grooves 234 of the forceps arms 23. The guide groove 234 can improve the stability of the puncture blade 3. Referring to the embodiment shown in fig. 4-5, the distal ends of the arms 23 converge toward each other and the corresponding guide slots 234 are open on opposite sides of the arms 23. In actual practice, the piercing blade 3 in the piercing position is retracted relative to the distal end of the jaw assembly 2 to avoid unnecessary damage to surrounding tissue.

In other words, the distal end side of the puncture blade 3 does not protrude beyond the distal end side of the guide groove 234.

The operation of the puncture forceps depends on the movement of the jaw assembly 2 and the movement of the puncture blade 3. In the particular form of actuation of the jaw assembly 2, the first actuation assembly 11 comprises a retaining member 114 for retaining the relative position of the actuation tube 22 with respect to the control handle 1 and an actuation rocker 111 for actuating the actuation tube 22 in movement, the retaining member 114 acting between the actuation rocker 111 and the control handle 1.

Referring to the drawings, the retaining member 114 and the restoring member 121 may be coaxially sleeved to improve space utilization. In actual production, the two do not interfere with each other because the side walls of the control chamber 133 separate the two to avoid unnecessary risks. In principle, the two can also be arranged coaxially with the outer diameter.

In the specific structure of other components of the first driving assembly 11, as shown in fig. 7, the first driving assembly 11 includes a driving rocker arm 111 rotatably mounted on the control handle 1, and the driving rocker arm 111 includes a driving portion 1111 for driving the driving pipe 22 to move and a force applying portion 1112 extending to the outside of the control handle 1. The driving rocker 111 is the actual working part of the first driving assembly 11. The first driving unit 11 further includes a first locking unit 112 acting between the force application portion 1112 and the control handle 1, and the first locking unit 112 is used for maintaining the relative positional relationship between the driving swing arm 111 and the control handle 1. The first locking member 112 includes a ratchet 1121 fixedly installed at the force application part 1112, a pawl 1122 rotatably installed at the control handle 1, a locking elastic member 1123 for maintaining the position of the pawl 1122, and a lock releasing member 1124 for driving the pawl 1122 to release the ratchet 1121. Also on the control handle 1 is a fixed arm 113 opposite to the driving swing arm 111, wherein a pawl 1122, a locking elastic member 1123 and a locking release member 1124 are mounted on the fixed arm 113. The fixed arm 113 is fixedly connected with the control handle 1 and arranged opposite to the driving rocker arm 111, so that the medical staff can conveniently hold and operate the medical staff. The first drive assembly 11 further comprises a retaining member 114 for maintaining the relative position of the drive tube 22 with respect to the control handle 1, the retaining member 114 acting between the drive rocker 111 and the control handle 1. The driving rocker arm 111 overcomes the holding force of the holder 114 during driving. The working process, the assembly relationship and the principle of the components of the first driving assembly 11 and the first locking assembly 112 can be unambiguously known by those skilled in the art from the drawings, and are not described in detail herein.

Referring to an embodiment of the driving implementation of the first driving assembly 11 and the driving pipe 22, a driving member 225 is fixed on the driving pipe 22, and the driving portion 1111 of the driving rocker arm 111 cooperates with the driving member 225 to drive the driving pipe 22 to move relative to the supporting pipe 21; in the axial direction of the driving pipe 22, the driving piece 225 and the driving part 1111 are in bidirectional transmission. The driving portion 1111 of the driving rocker arm 111 has at least one driving slot 1113, the driving member 225 is located in the driving slot 1113, and two side walls of the driving slot 1113 are bidirectionally engaged with the driving member 225 in the axial direction of the driving pipe 22. In a detail of the drive member 225, the drive member 225 is a sphere having a radial dimension greater than the drive tube 22. The arrangement of the embodiment has the advantages that the bidirectional transmission of the driving pipe 22 can be realized through the driving rocker arm 111, so that the situation that the driving pipe 22 is clamped and blocked due to the stress of the clamp assembly 2 is avoided, and the working stability of the clamp assembly 2 is improved.

In practical situations, the clamping assembly 2 often needs to adjust its position to achieve better grip, which may result in a non-synchronous position with the puncture blade 3. Referring to one embodiment, the piercing pliers comprise:

a support tube 21, the proximal end of the support tube 21 is connected with the control handle 1, and the distal end of the support tube 21 is provided with a forceps shaft 211;

the driving tube 22 is slidably mounted in the supporting tube 21, the proximal end of the driving tube 22 is linked with the first driving component 11, and each transmission part 232 of the clamping component 2 is linked with the driving tube 22;

the supporting tube 21 is rotatably installed with the control handle 1, and the puncture knife 3 is linked with the supporting tube 21 in the circumferential direction.

The rotation synchronization of the puncture knife 3 and the clamp assembly 2 is realized through the circumferential linkage arrangement of the puncture knife 3 and the supporting tube 21, the safety of the puncture clamp is improved while the angle of the clamp arm 23 is freely adjusted, and the device damage and the use risk caused by misoperation are avoided.

In a specific linkage manner, a synchronous sleeve 224 is arranged inside the distal end portion of the driving tube 22, the synchronous sleeve 224 is fixedly connected with the driving tube 22 and is provided with a knife outlet, the puncture knife 3 located at the initial position is located in the synchronous sleeve 224, and the puncture knife 3 enters the puncture position through the knife outlet. The synchronization sleeve 224 achieves distal synchronization of the drive tube 22 and the puncture knife 3 through the exit knife edge. The advantage of the synchronization mode in this embodiment is that the synchronization sleeve 224 directly acts on the distal end of the puncture knife 3, so the synchronization effect is more stable and accurate, synchronization deviation caused by component transmission is avoided, and meanwhile, the tube diameters of all parts can be further optimized. Further, the puncture knife 3 comprises a puncture part 31 for puncture and a control tube 32 extending to the proximal end, the puncture part 31 is of a flat structure, the synchronization sleeve 224 extends from the knife outlet to the proximal end to form a synchronization channel 2241, and the shape of the synchronization channel 2241 is matched with the shape of the puncture part 31. The synchronization passage 2241 can guide the movement of the puncturing part 31 while synchronizing the puncturing blade 3 and the driving tube 22.

In conjunction with the above, it will be appreciated that the clamp assembly 2 of the present application may be rotated about the control handle 1 to avoid interference with the first drive assembly 11, as referenced in one embodiment, the proximal end of the drive tube 22 is rotationally engaged with the first drive assembly 11. The rotational fit arrangement provides more freedom of movement of the drive tube 22, thereby increasing the freedom of movement of the jaw assembly 2. In the implementation of rotation, the proximal end of the support tube 21 is provided with a rotating sleeve 212 rotatably connected to the control handle 1, and the rotating sleeve 212 can implement rotation of the support tube 21 to drive the rotation of the forceps shaft 211, and further implement rotation of the forceps assembly 2. While rotation of the clamp assembly 2 rotates the drive tube 22.

Similarly, the puncture knife 3 also needs to rotate synchronously with the clamp assembly 2, and can rotate independently or in a linkage manner in terms of the implementation form of rotation. The specific linkage path can drive the puncture knife 3 to rotate through the driving tube 22; or the rotating sleeve 212 drives the driving tube 22, the driving tube 22 drives the synchronous sleeve 224, and the synchronous sleeve 224 drives the puncture knife 3. In the arrangement of the linkage rotation, the puncture knife 3 and the second drive component 12 can be separated from each other so as to prevent the driving force of the second drive component 12 from influencing the linkage, and the specific separation mode can be referred to the following description about the operation member axially abutting against and circumferentially releasing from the end of the proximal end of the puncture knife.

The working process in this application is also performed in dependence of the movement of the puncture knife 3 and the second drive assembly 12 is used to perform the movement process of the puncture knife 3. Referring to an embodiment, the second driving assembly 12 includes:

a restoring member 121 disposed between the control handle 1 and the puncture blade 3, the restoring member 121 for holding the puncture blade 3 in an initial position (refer to fig. 11);

an operation member 122 movably mounted on the control handle 1, wherein the proximal end of the puncture knife 3 extends into the control handle 1 and is linked with the operation member 122, and the operation member 122 is used for driving the puncture knife 3 to overcome the reset member 121 and enter the puncture position (refer to fig. 17).

As for the above, the installation effect of the operation member 122 needs to be able to release the rotation stroke of the puncture knife 3, that is, the operation member 122 can rotate synchronously with the puncture knife 3; alternatively, the operation member 122 and the piercing knife 3 are rotatably engaged. In other words, the operating member 122 is rotatably attached to the control handle 1 or axially slidably attached to the control handle 1. In one embodiment, the second drive assembly 12 comprises an operating member 122 which is coupled to the proximal end of the piercing knife 3, and the end of the proximal end of the piercing knife 3 is axially abutted against the end of the distal end of the operating member 122 in the axial direction of the piercing knife 3 and circumferentially released. In this embodiment, the axial abutment and circumferential release between the puncture blade 3 and the operating element 122 release the circumferential movement stroke of the puncture blade 3 relative to the control handle 1, thereby providing a structural basis for the synchronous movement of the puncture blade 3 and other components while ensuring the driving effect of the puncture blade 3.

At the specific location where the axial abutment and circumferential release are realized, as shown in the drawing, the operation member 122 includes an operation housing 1221 exposed to the outside of the control handle 1 and an operation rod 1222 extending to the inside of the control handle 1, and the operation rod 1222 is axially abutted to the end of the proximal end of the control tube 32 and circumferentially released.

The axially abutted operating rod 1222 and the control tube 32 can realize transmission of axial acting force, so that the puncture knife 3 is driven to enter or exit a puncture position, and the circumferentially released operating rod 1222 and the control tube 32 can prevent the operating piece 1222 from transmitting the axial acting force to the control tube 32, so that certain safety isolation is realized. The operating housing 1221 is used to directly receive the force applied by the medical staff. In the drawing, the operation housing 1221 is a tube shape that is fitted over the proximal end of the control handle 1, and can provide a guide for the movement path of the entire operation element 122, and more importantly, can shield the portion of the operation lever 1222 entering the control handle 1, thereby providing a certain protection effect.

In the process of extending the operating rod 1222 from the proximal end to the distal end, the operating housing 1221 is slidably mounted on the proximal end side of the control handle 1, and the operating rod 1222 extends from the first sealing interface 131 on the proximal end face of the control handle 1 to the inside of the control handle 1. The first sealing interface 131 may be configured as a hole with a preset size formed on the end face of the proximal end of the control handle 1, or as shown in the accompanying drawings, it is a separately configured matching disk, the outer peripheral surface of the matching disk is provided with a thread or a fastening structure to facilitate the installation and detachment of the control handle 1, wherein the operation rod 1222 is connected with the matching disk in a sealing sliding manner. The control handle 1 is provided with a control chamber 133 therein, the distal end of the operating rod 1222 extends into the control chamber 133, the distal end of the operating rod 1222 is provided with a first plane of rotation 1223, and the first plane of rotation 1223 is used for achieving simultaneous circumferential release of torque transmitted axially with the piercing knife 3.

Similar to the operation rod 1222, the puncture knife 3 extends from the distal end to the inside of the control handle 1, the puncture knife 3 includes a puncture portion 31 for puncture and a control tube 32 extending to the proximal end, and the control tube 32 is movably inserted into the installation channel. I.e. the proximal end of the control tube 32 extends through the distal side of the control handle 1 and to the proximal side of the control handle 1. During the process of extending the control tube 32 from the distal end to the proximal end, the control chamber 133 is provided with a second sealing interface 132 for the control tube 32 to pass through. The second sealing interface 132 can be described with reference to the first sealing interface 131, and is not described herein again.

The proximal end of the control tube 32 is provided with a control portion 321 which is engaged with the operation member 122 (in this embodiment, the operation rod 1222 mentioned above), and the control portion 321 is provided with a second rotation plane 322, and the second rotation plane 322 is used for axially transmitting torque with the operation rod 1222 and is in a circumferential releasing state.

That is, as shown in fig. 17, the first 1223 and second 322 planes of rotation have axially-opposed, circumferentially-released engagement. The first rotating plane 1223 and the second rotating plane 322 can be arranged in a bidirectional transmission manner or in a unidirectional transmission manner in the axial direction, and in the process of axial opposition, the first rotating plane 1223 and the second rotating plane 322 can move in the axial direction of the control chamber 133 in the process of maintaining fit, so that it can be seen that the control chamber 133 provides a relatively closed space to realize the matching relationship and the movement stroke between the puncture knife 3 and the operating member 122. In understanding the stroke control, referring to fig. 11 and 17, when the piercing knife 3 is in the initial position, the proximal sidewall of the operating rod 1222 abuts the proximal sidewall of the control chamber 133; when the puncture blade 3 is positioned at the puncture site, the distal side wall of the control portion 321 abuts against the distal side wall of the control chamber 133. This arrangement allows stroke control of the lancet 3 (particularly the puncturing part 31) by restricting the stroke of the control part 321 by the control chamber 133, so that the lancet 3 at the puncturing position does not protrude from the distal end surface of the jaw assembly 2, as will be described later, and the safety risk is reduced.

In order to optimize the layout of the internal components of the control handle 1, other components of the second driving assembly 12 can also be disposed in the control chamber 133, and referring to an embodiment, the restoring member 121 is an elastic member disposed around the control tube 32 and two ends of the elastic member respectively press against the distal side wall of the control portion 321 and the distal side wall of the control chamber 133. Since the control chamber 133 and the control handle 1 are fixedly disposed, it can also be understood that the reset member 121 is disposed between the control portion 321 and the control handle 1 in a mechanical transmission relationship.

In the sizing of the control chamber 133, the control chamber 133 extends in the axial direction of the control tube 32, and the proximal end of the control tube 32 and the distal end of the operating rod 1222 extend into the control chamber 133 from both sides, respectively. The first seal interface 131 has an opening dimension that is less than the radial dimension of the distal end of the lever 1222, and the second seal interface 132 has an opening dimension that is less than the radial dimension of the proximal end of the control tube 32. This arrangement enables the control chamber 133 to constrain the component motion stroke, further improving component integration. In terms of configuration, the control chamber 133 includes a first chamber 1331 and a second chamber 1332 which are communicated with each other, wherein the inner diameter of the first chamber 1331 is smaller than that of the second chamber 1332, the second chamber 1332 is used for matching and moving the operating rod 1222 and the control tube 32, and at least a part of the reset element 121 is accommodated in the first chamber 1331. When the reset member 121 is configured as a coil spring as shown in the drawings, the reset member 121 has an energy storage state and a corresponding release state which are completely accommodated in the first chamber 1331, and the reset member 121 in the energy storage state can drive the puncture blade 3 to return to the initial position.

Referring to fig. 3, the puncture clamp further includes an endoscope assembly 4, the endoscope assembly 4 includes an endoscope tube 41 sleeved on the clamp assembly 2, a guide conduit 42 for an endoscope to pass through is arranged in the endoscope tube 41, and a distal end side axis of the guide conduit 42 points to the accommodating space 2312.

The guide line 42 is mainly used for insertion and guidance of the endoscope, and particularly, at a distal end portion, can stabilize the angle of view of the endoscope, thereby ensuring stable observation. The guide conduit 42 is arranged in parallel with the installation channel as a whole, ensuring the size of the entrance of the whole instrument. The distal end side of the guide duct 42 is bent to be directed toward the accommodation space 2312. In this embodiment, the guiding pipeline 42 and the installation channel are not coaxially arranged, so that the bending 421 is used to point to the accommodating space, thereby guiding the endoscope to stably observe the accommodating space; meanwhile, the position of the bent 421 can position the endoscope, so that certain movement resistance of the endoscope is increased, and the stability of the endoscope is kept. The function of positioning the endoscope can also be achieved by a local reduction of the guide conduit 42. Similarly, the bend or local diameter reduction of the positioning endoscope may be provided at any suitable position in the guide conduit 42.

Independently of the distal side, the proximal side of the guide conduit 42 extends away from the installation channel and is used for the passage of an endoscope. In the drawing, it is shown that the adapter tube 43 is provided at the proximal end of the endoscope tube 1, and the adapter tube 43 is oriented to facilitate the entry of the endoscope, so that the guide channel 42 in the adapter tube 43 extends smoothly, and the bending or local diameter reduction of the endoscope is not affected.

In this embodiment, the endoscope assembly 4 may also be selectively mounted. Referring to the drawings, the endoscope 41 is movably sleeved on the support tube 21, and the proximal end of the endoscope 41 is engaged with the control handle 1. The telescopically arranged endoscope tube 41 also serves to isolate possible rotation of the support tube 21, such as is the case when the jaw assembly 2 needs to be rotated as described above.

Specifically, the control handle 1 is provided with an engaging arm 44 that engages with the adapter tube 43, and the engaging arm 44 can provide a basis for providing an engaging structure while maintaining the relative position of the endoscope tube 41, or can serve as an engaging structure itself.

In the embodiment, the external and flexibly matched arrangement mode of the endoscope can effectively reduce the sizes of the clamp assembly 2 and the first driving assembly 11, so that a foundation is provided for flexible arrangement of the puncture clamp.

Based on the improvement, the application also discloses a puncture clamp, includes:

the control device comprises a control handle 1, wherein a first driving assembly 11 is arranged on the control handle 1;

the clamp assembly 2 is arranged on the control handle 1 and controlled by the first driving assembly 11, and an installation channel extending from the near end to the far end is arranged in the clamp assembly 2;

the distal end of the clamp assembly 2 has two cooperating jawarms 23, the two jawarms 23 are pivotally engaged with each other about an axis, each jawarms 23 has a working portion 231 on one side of the axis and a transmission portion 232 on the other side of the axis, the working portions 231 of the two jawarms 23 have a closed position (refer to fig. 6) and an open position (refer to fig. 7) relative to each other; the opposite sides of the working parts 231 of the two clamp arms 23 are respectively provided with a recessed area 2311, and when the two clamp arms 23 are in the close position, the recessed areas 2311 on the working parts 231 of the two clamp arms 23 enclose an accommodating space 2312.

The clamping and releasing of the clamping assembly 2 are achieved through the switching of different positions of the two clamp arms 23, compared with the two clamp arms 23 which are completely meshed in the prior art, the accommodating space 2312 is formed through the depression of the clamp arms 23 in the technical scheme disclosed by the application, so that the clamping assembly 2 can clamp a target object or tissue better, the accommodating space 2312 can also achieve the stacking of the clamped object in the space, and a foundation is provided for the next operation.

In the specific arrangement of the jawarms 23, and with reference to the embodiment shown in FIG. 4, the working portion 231 includes

The clamping section 2313 is provided with a toothed structure, and the clamping sections 2313 of the two clamp arms 23 are meshed with each other;

a housing section 2314, the housing section 2314 having a recessed area 2311;

a connecting section 2315 and a connecting section 2315 of the two clamp arms 23 are used for realizing the rotation fit.

The accommodating sections 2314 of the two clamp arms 23 mutually surround to form an accommodating space 2312, so that an accommodating space can be provided for a clamped object, and the clamping force is improved while the integrity of the clamped object is ensured. In addition to the connecting sections 2315 being used to transmit torque, reference is also made to the attached drawings, which show that in the closed position of the two clamp arms 23, a clamping gap 2316 is provided between the connecting sections 2315 of the two clamps. Further, the holding gap 2316 communicates with the accommodating space 2312. The clamping gap 2316 may further expand the size of the receiving space 2312. Avoiding unnecessary damage due to the pliers legs 23 being brought closer together.

In the specific configuration of the accommodating space 2312, the recessed areas 2311 of the two clamp arms 23 are symmetrically arranged and extend in the axial direction of the mounting passage. In the drawings, the accommodating space 2312 is in the shape of a long-strip hole, and can also be in various shapes such as a waist shape, a dog bone shape, a rectangle shape, a circle shape and the like. However, the following conditions need to be satisfied: in the projection of the axial direction of the two clamp arms 23 in rotating fit, the projection shape area of the accommodating space 2312 at least accounts for 25% of the projection shape area of the outer contours of the two clamp arms 23. In the drawing, the projected area of the accommodating space 2312 accounts for more than 28% (including) of the projected area of the outer contour of the two clamp arms 23.

In the outer profile of the distal end of the clamping assembly 2, referring to one embodiment, the distal sides of the gripping sections 2313 of the two clamping arms 23 converge toward each other (see fig. 4, where the gripping sections 2313 converge in the left-right direction in fig. 4 as compared to the receiving sections 2314) and are in smooth transition with the receiving sections 2314. The converging distal ends allow for a smaller size, and a smaller size clamp may better perform the function of peeling or delaminating the pericardium during a procedure such as for pericardial access.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. Features of different embodiments are shown in the same drawing, which is to be understood as also disclosing combinations of the various embodiments concerned.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims (10)

1. Automatic synchronous puncture clamp, its characterized in that includes:

the control handle is provided with a first driving assembly and a second driving assembly;

the clamp assembly is arranged on the control handle and controlled by the first driving assembly, and a mounting channel extending from the proximal end to the distal end is arranged in the clamp assembly; the far end of the clamp component is provided with two clamp arms which are matched with each other, the two clamp arms are matched with each other in a rotating way around an axis, each clamp arm is provided with a working part at one side of the axis and a transmission part at the other end, and a clamping area is arranged between the working parts of the two clamp arms;

the puncture knife is movably arranged in the mounting channel and is controlled by the second driving component; the far end of the puncture knife is provided with a puncture position extending into the clamping area and an initial position withdrawing from the clamping area;

the working parts of the two clamp arms are provided with a closing position and an opening position which are opposite; under the opening position, the transmission parts of the two forceps arms interfere with the motion path of the puncture knife.

2. The automatically synchronized lancing forceps of claim 1, wherein in the open position, the drive portions of the two forceps arms are positioned on the two sides of the lancing blade respectively and clamp and position the lancing blade.

3. The automatically synchronized lancing forceps of claim 1, wherein in the open position, the gap between the drive portions of the two forceps arms is less than or equal to the width of the lancing blade to block the lancing blade from entering the clamping zone.

4. The automatically synchronized lancing forceps of claim 1, wherein the drive portion includes a drive arm extending proximally from the working portion and a synchronizing portion cooperating with the drive arm, the synchronizing portion moving with the drive arm to have an interference position interacting with the side edge of the lancing blade and a release position away from the side edge of the lancing blade.

5. The automatically synchronized lancing forceps according to claim 4, wherein the synchronizing portions of the two forceps arms are disposed opposite to each other and are located on both sides of the lancing blade.

6. The automatic synchronizing lancing clamp according to claim 4, wherein the synchronizing portion is a synchronizing stop fixed on the driving arm, and the synchronizing stop of one of the two jawarms abuts against the driving arm of the other jawarms in a rotation engagement state and in an axial direction of the rotation shaft.

7. The automatically synchronized puncture forceps of claim 1, wherein the two forceps arms are rotatably engaged by a forceps shaft, the forceps shaft includes a first half shaft and a second half shaft coaxially disposed, a knife passing gap is provided between the first half shaft and the second half shaft, and the puncture knife enters the puncture site through the knife passing gap.

8. The automatically synchronized puncture forceps according to claim 1, wherein a guide groove is provided in the middle of each of the two forceps arms in the axial direction in which the two forceps arms are rotatably engaged, the guide groove extends from the proximal end side to the distal end side of the forceps arm, and the side edges of the puncture knife at the puncture site are respectively located in the guide grooves of the two forceps arms.

9. The automatically synchronized lancing clamp of claim 1, wherein the lancing clamp comprises:

the proximal end of the supporting tube is connected to the control handle, and the distal end of the supporting tube is provided with a forceps shaft;

the driving pipe is slidably mounted in the supporting pipe, the near end of the driving pipe is linked with the first driving assembly, and each transmission part of the clamping assembly is linked with the driving pipe;

the supporting tube and the control handle are rotatably installed, and the puncture knife and the supporting tube are arranged in a linkage mode in the circumferential direction.

10. The automatically synchronized lancing forceps of claim 1, wherein the second drive assembly includes an operating member that is in linkage with the proximal end of the lancing blade, and wherein the end of the proximal end of the lancing blade is axially offset and circumferentially released from the end of the distal end of the operating member in the axial direction of the lancing blade.

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