CN115153719A - Hemostatic forceps - Google Patents

Abstract

The invention provides a pair of hemostatic forceps, which comprises an adapter and a belt cabin component; in the belt bin assembly, a belt feeding groove is formed in a clamp arm, the near end of the belt feeding groove is communicated with the space in the bin of the belt bin to form a belt feeding channel, and the far end of the belt feeding groove is positioned on the inner side of a hook part of the clamp arm and is bent along the shape of the hook part; the belt conveying structure is matched with the tourniquet under the driving of the first actuating piece; the triggering structure is driven by the first actuating piece to be matched with the hook part; the adapter comprises a shell and an indicating structure, wherein a driving shaft used for driving a first actuating piece is arranged in the shell, the indicating structure comprises a movement indicating needle and an observing position, the movement indicating needle is accommodated in the shell and is in linkage with the driving shaft, the observing position is formed on the shell and corresponds to the movement indicating needle, and at least two blood vessel types with different diameters are marked on the observing position from near to far. The working process of the firing structure can be displayed on the shell of the adapter to guide a user to clamp blood vessels with different thicknesses.

Description

a hemostatic forceps

technical field

The invention relates to the technical field of medical devices, in particular to a hemostatic forceps.

Background technique

In order to fully expose the surgical field during the surgical operation, it is necessary to ligate the blood vessels around the target tissue to prevent bleeding. Hemostasis has become one of the cores of basic surgical techniques. Surgical operations on any part of the human body almost without exception involve bleeding and hemostasis. Generally, hemostasis is closed with hemostatic forceps and ligation clips.

During the surgical operation, the doctor uses hemostatic forceps to ligate the blood vessels around the target tissue. Usually, the blood vessel to be clamped is first placed in the V-shaped jaw formed by the two clamping arms, and the V-shaped ligation clip is pre-placed in the V-shaped jaw. The V-shaped ligation clip is then closed to clamp the blood vessel by closing the two clip arms. However, during the clamping process of the existing hemostatic forceps, the V-shaped ligation clip accommodated therein is clamped by completely closing the V-shaped jaws. Since the shape and size of the V-shaped jaws formed by the two forceps arms are determined Yes, the shape and size of the V-shaped jaws after they are fully closed are also determined, so the clamping force applied to one type of V-shaped ligation clips when the V-shaped jaws are fully closed is fixed, and the V-shaped jaws with a fixed shape and size are It can only be used in conjunction with the fixed type V-shaped ligation clip to clamp the blood vessels of its corresponding diameter type. It cannot be adjusted according to the diameter of the blood vessel to be clamped. The fixed shape and size of the V-shaped jaw can be completely closed. The clamping force of the clip, that is, the combination of the V-shaped jaws of fixed shape and size and the fixed-type V-shaped ligation clip cannot meet the requirements of clipping blood vessels of different thicknesses.

There is a hemostatic forceps, as shown in FIG. 1 , the hemostatic forceps include a belt warehouse structure, a belt delivery structure, a firing structure, a forceps arm and a cannula; the belt warehouse structure includes at least one strip-shaped tourniquet and accommodates at least one strip-shaped tourniquet. The belt compartment of the belt, at least one tourniquet is arranged and stored in the inside of the belt compartment in the far and near directions; the belt compartment structure is fixedly accommodated in the casing; the proximal end of the forceps arm is fixedly installed in the casing, and the distal end of the forceps arm has a hook The hook part protrudes out of the casing, the clamp arm is provided with a belt feeding groove, the proximal end of the feeding belt groove is located in the casing and communicates with the inner space of the belt warehouse to form a belt feeding channel, and the distal end of the belt feeding groove is located in the bending The inner side of the hook portion is bent along the shape of the hook portion; the distal end of the belt feeding structure is inserted into the casing, and the belt feeding structure cooperates with the tourniquet; the firing structure is penetrated in the casing, and the firing structure cooperates with the hook portion.

During the process of clamping the blood vessel with the hemostatic forceps, the blood vessel to be clamped is located in the jaw formed by the hook portion, the tourniquet located at the farthest end of the conveyor belt channel is the tourniquet to be inserted, and the conveyor belt structure moves farther to push the conveyor belt channel All tourniquets inside move far away, and when the delivery structure is located at the end position of the distal end of the delivery, the distal end of the tourniquet to be inserted into the forceps is bent into an annular part along the shape of the delivery groove to surround the blood vessel to be clamped, and the hemostasis is to be stopped by the insertion of the forceps. The distal end of the belt protrudes out of the belt feeding groove; the firing structure moves far away, and fits the annular part of the tourniquet to be inserted, thereby realizing the clamping of the blood vessel to be clamped.

The above-mentioned hemostatic forceps can realize the clamping force exerted by the firing structure and the hook portion of the forceps arm on the blood vessel to be clamped by controlling the stroke of the firing structure, so that it is suitable for clamping blood vessels of different thicknesses with the help of one hemostatic forceps. There is no need to frequently replace different types of hemostatic forceps according to the diameter of the vessel to be clamped. Specifically, a hemostatic forceps can be used to clamp blood vessels of different thicknesses. The description is as follows: thick blood vessels have thicker blood vessels, and thin blood vessels have thinner blood vessels. The distance between the hooks should be less than or equal to the thickness of the two vessel walls of the vessel to be clamped, but the distance between the firing structure and the hooks should not be too smaller than the thickness of the two vessel walls of the vessel to be clamped. Vascular wall tissue necrosis; the above-mentioned hemostatic forceps, by controlling the stroke of the firing structure, can adjust the distance between the firing structure and the hook to be appropriately less than or equal to the thickness of the two blood vessel walls of the blood vessel to be clamped, that is, the firing structure and the forceps can be controlled. The hook portion of the arm exerts a clamping force on the blood vessel to be clamped, which can then be applied to clamp blood vessels of different thicknesses.

However, the working process of the firing structure to close the blood vessel to be clamped occurs inside the closed casing of the hemostatic forceps and is located inside the human body. The doctor cannot accurately know the working process of the firing structure from the outside, and it is difficult to adjust the stroke of the firing structure to control. The firing structure and the hook portion of the forceps arm apply the clamping force to the blood vessel to be clamped, so as to clamp blood vessels of different thicknesses.

SUMMARY OF THE INVENTION

(1) Technical problems to be solved

In view of the problems existing in the above technologies, the present invention solves it at least to a certain extent. Therefore, an object of the present invention is to provide a hemostatic forceps, which can display the working process of the firing structure on the housing of the adapter, and guide the user to clamp blood vessels of different thicknesses.

(2) Technical solutions

In order to achieve the above-mentioned purpose, the main technical scheme adopted in the present invention includes:

The present invention provides a hemostatic forceps, comprising an adapter and a belt cartridge assembly;

The belt magazine assembly includes a first actuating member, a belt magazine structure, a belt feeding structure, a firing structure, a plier arm, and a pipe body and a sleeve that are fixed and communicated in sequence from near to far;

The first actuating member is accommodated in the tubular body; the band cartridge structure includes at least one strip tourniquet and a band cartridge for accommodating at least one strip tourniquet arranged in sequence in the distal and proximal directions, the band cartridge structure is accommodated in the sleeve and is connected with the sleeve Fixed connection; the proximal end of the forceps arm is fixedly installed in the casing, the distal end of the forceps arm has a hook portion extending out of the casing, the forceps arm is provided with a belt feeding groove, and the proximal end of the belt feeding groove is located in the casing and is connected with the belt. The inner space of the warehouse is connected to form a belt feeding channel, the distal end of the belt feeding groove is located inside the hook portion and is bent along the shape of the hook portion; the proximal end of the belt feeding structure is connected with the first actuating member, and the distal end of the belt feeding structure is The end is inserted into the casing, and the belt feeding structure cooperates with the tourniquet; the firing structure is penetrated in the casing, the proximal end of the firing structure is connected with the first actuating member, and the distal end of the firing structure is matched with the hook portion;

During the process of clamping the blood vessel, the tourniquet located at the farthest end of the conveyor belt channel is the tourniquet to be inserted into the groove. The first actuating member drives the conveyor belt structure to move farther, and pushes all the tourniquets in the conveyor belt channel to move farther, and the conveyor belt moves farther. When the belt structure is located at the end position of the distal end of the conveyor belt, the distal end of the tourniquet to be inserted into the groove is bent into a ring shape along the shape of the conveyor belt groove; annular part;

The adapter includes a housing and an indicating structure, the distal end of the housing forms a first insertion channel, and a drive shaft is penetrated through the first insertion channel; the proximal end of the tube body is inserted into the first insertion channel, and the drive shaft is connected to the first actuation piece proximal connection;

The indicating structure includes a motion indicating needle accommodated in the casing and an observation position formed on the casing and corresponding to the motion indicating needle; the motion indicating needle is set in linkage with the drive shaft, and during the movement of the motion indicating needle following the movement of the drive shaft, the motion indicating needle The indicating end of the needle is always located in the observation position; the position on the observation position or on the housing near the movement track of the indicating end of the movement indicator needle is marked with at least two different diameter blood vessel types arranged from near to far to the firing completion indicator scale.

Optionally, the indicating structure further includes an amplifying structure for amplifying the mechanical motion range, the motion input end of the amplifying structure is connected with the drive shaft, and the motion amplifying output end of the amplifying structure is connected with the motion indicating needle.

Optionally, the observation position is a transparent cover provided on the housing.

Optionally, the transparent cover is waist-shaped extending in the distal and proximal direction.

Optionally, the movement indicator needle is fixedly mounted on the drive shaft perpendicular to the axial direction of the drive shaft, and the movement indicator needle is located at the proximal end of the drive shaft.

Optionally, on the observation position or on the housing near the motion trajectory of the indication end of the motion indicator needle, there are three firing completion indication scales for blood vessel types with different diameters, and the firing completion indication scales for the three blood vessel types with different diameters are respectively indicated by The firing completion indication scale for thick vessels, the firing completion indication scale for medium vessels, and the firing completion indication scale for thin vessels are arranged farthest.

Optionally, the lengths of the firing completion indication scales of the three blood vessel types with different diameters are different; wherein, the firing completion indication scale of the thick blood vessel is the longest, and the firing completion indication scale of the thin blood vessel is the shortest.

Optionally, the position corresponding to each firing completion indication scale on the transparent cover or casing is marked with an identifier "L", "M" or "S" of the diameter vessel type to which the firing completion indication scale belongs, where "L" indicates thick vessels, "M" indicates medium vessels, and "S" indicates small vessels.

Optionally, the adapter further includes a second actuating member; a second insertion channel for selectively plugging the drive assembly is formed on the casing, and the power output end of the second actuating member is accommodated in the casing and connected to the drive shaft, The power input end of the second actuating member is located in the second insertion channel and is connected with the driving assembly.

Optionally, the adapter further includes a control unit, a prompt unit, and a displacement sensor arranged on the drive shaft. Both the displacement sensor and the prompt unit are connected in communication with the control unit. The displacement sensor collects the displacement data of the drive shaft. The set travel trajectory of the firing structure determines the current travel information of the firing structure, and outputs the determination result through the prompting unit.

(3) Beneficial effects

The beneficial effects of the present invention are:

The movement indicator needle, which is kept in linkage with the drive shaft, is matched with the observation position set on the housing, and the position of the observation position or the position on the housing near the movement track of the indicator end of the movement indicator needle is marked with at least one arranged from near to far. Two different diameter blood vessel types have firing completion indication scales, so that when the indicator end of the movement indicator needle moves to the firing completion indication scale of a certain diameter blood vessel type, the drive shaft drives the cartridge assembly to fire the blood vessel of this diameter to complete the firing, enabling the user to stop bleeding. The outside of the forceps learns the working process information inside the hemostatic forceps through the observation position according to the movement of the observed moving pointer, and then guides the user to use the hemostatic forceps to clamp blood vessels of different thicknesses.

Description of drawings

The invention is described with the aid of the following figures:

1 is a schematic cross-sectional view of a hemostatic forceps according to a specific embodiment of the present invention, wherein the conveyor belt structure is located at the initial position of the conveyor belt, and the firing structure is located at the initial firing position;

Fig. 2 is the enlarged schematic diagram of the distal end structure of the hemostatic forceps in Fig. 1;

3 is a schematic cross-sectional view of a hemostatic forceps according to a specific embodiment of the present invention, wherein the belt feeding structure is located at the end position of the feeding belt;

FIG. 4 is an enlarged schematic view of the distal end structure of the hemostatic forceps in FIG. 3;

5 is a schematic cross-sectional view of a hemostatic forceps according to an embodiment of the present invention, wherein the firing structure is located at the firing termination position;

FIG. 6 is an enlarged schematic view of the distal end structure of the hemostatic forceps in FIG. 5;

FIG. 7 is a schematic three-dimensional structural diagram of the distal end of the clamp arm according to a specific embodiment of the present invention;

8 is a schematic rear view of a clamp arm according to an embodiment of the present invention;

9 is a schematic structural diagram of a transmission member according to a specific embodiment of the present invention;

Fig. 10 is the partial structure schematic diagram of the belt bin according to the specific embodiment of the present invention;

11 is a schematic cross-sectional view of a hemostatic forceps in Example 1 of the present invention;

Fig. 12 is a partial enlarged schematic view of the adapter in Fig. 11;

13 is a schematic side view of a hemostatic forceps in Example 1 of the present invention;

FIG. 14 is a partially enlarged schematic view of the adapter in FIG. 13 .

[Description of reference numerals]

1: With warehouse components;

11: pipe body; 12: casing;

2: clamp arm;

21: Hook part; 22: Belt feeding slot; 23: Straight surface; 24: Curved surface; 25: Bending surface; 26: First installation slot; 27: Second installation slot; 28: First clip ; 29: The second clip; 30: The first reset piece; 31: The second reset piece; 32: The first guide surface; 33: The second guide surface;

41: tourniquet; 42: belt compartment; 43: tourniquet to be inserted into the groove; 44: side top wall; 45: one-way stop groove; 46: stop wall; 47: slide out wall;

51: Clap head; 52: Clap surface;

6: Transmission parts;

61: elastic pusher; 62: first raised end; 63: elastic stopper; 64: second raised end; 65: horizontal part; 66: inclined part; 67: fixed end;

7: tape feeder;

71: one-way push groove; 72: push wall; 73: inclined wall;

8: adapter;

81: first insertion channel; 82: drive shaft; 83: housing; 84: movement indicator needle; 85: transparent cover; 86: firing completion indication scale for thick blood vessels; 87: firing completion indicator scale for medium blood vessels; 88 : The firing completion indicator scale of the thin blood vessel; 89: The second insertion channel;

9: handle;

91: Drive assembly; 92: Displacement sensor.

Detailed ways

In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below with reference to the accompanying drawings and through specific embodiments. Wherein, the "near" mentioned herein refers to the side close to the operator, and the "distal" refers to the side close to the patient. The orientation nouns such as "up", "down", "front", "rear", "left", and "right" mentioned in this document refer to the orientation in Fig. 11, wherein the direction from near to far is also referred to as the rear forward direction.

In order to further clearly illustrate the hemostatic forceps mentioned in the background of the present invention, a detailed description will now be made according to the accompanying drawings 1-10 as an example.

As shown in FIGS. 1 to 6 , the hemostatic forceps provided in this example includes an adapter 8 and a tape cartridge assembly 1 .

The belt bin assembly 1 includes a first actuating member (the actuating structure and its working principle, which have been embodied in the Chinese patent of CN201911021573.1, the application date is October 25, 2019, the publication date is April 27, 2021, This patent is cited in its entirety in the present invention, and will not be repeated here), the belt cartridge structure, the belt feeding structure, the firing structure, the clamp arm 2, and the tubular body 11 and the sleeve 12 arranged in sequence from near to far.

The distal end of the tubular body 11 communicates with the proximal end of the sleeve 12 , and the proximal end of the sleeve 12 is fixedly connected to the distal end of the tubular body 11 . The first actuating member is accommodated in the tubular body 11 .

The belt compartment structure includes at least one strip tourniquet 41 and a belt compartment 42 for accommodating at least one strip tourniquet 41. The at least one tourniquet 41 is arranged and stored in the interior of the belt compartment 42 in order in the far and near directions, and the belt compartment structure is accommodated in the sleeve. inside the tube 12 , and the cassette structure is fixedly connected with the sleeve 12 . The forceps arm 2 has a straight portion and a hook portion 21 which are connected in sequence from near to far. The proximal end of the straight portion is fixedly installed in the sleeve 12. There is a belt feeding groove 22, the proximal end of the belt feeding groove 22 (ie the first end of the belt feeding groove 22) is located in the straight part, and the distal end of the belt feeding groove 22 (ie the second end of the belt feeding groove 22) is located in the hook shape The inner side of the part 21 (ie the side of the hook-shaped part 21 facing the sleeve 12 ) and bent along the shape of the hook-shaped part 21 . The bottom plate of the belt warehouse is placed on the straight part, the belt feeding slot 22 is located on the far side of the bottom plate of the belt warehouse, the bottom surface of the proximal end of the belt feeding groove 22 is coplanar with the top surface of the bottom plate of the belt warehouse, and the proximal end of the belt feeding groove is provided with a The opening toward the belt magazine communicates with the inner space of the belt magazine 42 ; during the belt feeding process, the belt feeding structure pushes the tourniquet away from the belt magazine bottom plate and enters the belt feeding groove 22 from the proximal end opening of the belt feeding groove 22 .

The distal end of the conveyor belt structure is inserted into the sleeve 12, the conveyor belt structure is matched with the tourniquet 41, the proximal end of the conveyor belt structure is inserted into the tube body 11, and the proximal end of the conveyor belt structure is connected with the first actuating member, so that the first An actuating member drives the conveyor belt structure to move in the far and near directions, for (when the first actuating member drives the conveyor belt structure to move farther) to push the tourniquet 41 in the conveyor belt channel to move farther, and for (the first actuating member to drive the conveyor belt structure to move farther) When the actuating member drives the conveyor belt structure to move closer), the conveyor belt structure after the tourniquet 41 is pushed is reset to the initial state. During the process of clamping the blood vessel, the tourniquet located at the farthest end of the belt warehouse 42 is the tourniquet 43 to be inserted into the groove, and the conveyor belt structure moves far away, and pushes all the tourniquets in the belt warehouse 42 to move far away, and pushes the to-be-entered groove to stop bleeding. When the belt 43 enters the belt feeding groove 22, and the belt feeding structure is located at the end position of the distal end of the feeding belt, the distal end of the tourniquet 43 to be inserted into the groove is shaped and bent into a ring shape along the belt feeding groove 22 (as shown in Figures 3 and 4). ), the distal end of the tourniquet 43 to be inserted into the groove extends out of the belt feeding groove 22 .

The proximal end of the firing structure is inserted into the tube body 11, and the proximal end of the firing structure is connected with the first actuating member, so that after the belt feeding structure is completed, the first actuating member drives the firing structure to move in the far and near directions, using When (the first actuating member drives the firing structure to move far), the firing structure snaps against the loop portion of the tourniquet 43 to be inserted into the groove (as shown in FIGS. 5 and 6 ), and is used for (the first actuating member drives When the firing structure moves closer), the firing structure after the tourniquet 41 is snapped is reset to the initial state. Wherein, the circle shape referred to in the present invention refers to any surrounding shape that can form a hollow, not only the circle shape.

In the belt magazine assembly 1 thus set up, in the initial state, the belt feeding structure is located at the initial position of the belt feeding, and the firing structure is located at the initial firing position. Use the hook-like portion 21 of the clamp arm 2 in the belt magazine assembly 1 to hook the blood vessel to be clamped, and then the first actuating member drives the belt structure to move farther, and pushes all the tourniquets 41 in the belt magazine to move farther, wherein the to-be-closed blood vessel is moved. The tourniquet 43 into the groove is pushed to the feeding groove 22, the feeding structure is located at the end position of the feeding, the distal end of the tourniquet 43 to be inserted is bent to the ring shape along the feeding groove 22, and the blood vessel to be clamped is located in the ring. (that is, the ring-shaped part surrounds the vessel to be clamped). Then, the first actuating member drives the firing structure to move farther to the firing end position, so that the distal end of the firing structure snaps against the loop portion of the tourniquet 43 to be inserted, so that the tourniquet 43 to be inserted closes the blood vessel. Finally, the first actuating member drives the firing structure and the belt feeding structure to reset to the initial state. During the reset process, first the first actuating member drives the firing structure to move from the firing end position to the firing initial position, and then the first actuating member drives the firing structure to move closer to the firing initial position. The belt-feeding structure moves closer from the belt-feeding end position to the belt-feeding initial position, and releases the clamped blood vessel from the jaws formed by the hook-shaped portion 21 .

The adapter 8 includes a first insertion channel 81 and a drive shaft 82 passing through the first insertion channel 81 .

The proximal end of the tube body 11 is inserted into the first insertion channel 81, the proximal end of the tube body 11 is connected to the first insertion channel 81, the drive shaft 82 is located at the proximal side of the first actuator, and the distal end of the drive shaft 82 is connected to the first insertion channel 81. The proximal end of the actuator is connected for driving the first actuator. In this example, the proximal end of the tube body 11 and the first insertion channel 81 are relatively stationary in the distal and proximal directions.

Preferably, the belt magazine 42 includes a belt magazine top plate (not shown in the figure) located at the distal end of the belt magazine 42, and the two side parts of the belt magazine top plate are respectively connected with the two side walls of the belt magazine 42; on the belt magazine top plate An elastic pressing piece is provided along the belt feeding direction and tilted toward the belt feeding groove 22; during the belt feeding process, the to-be-groove tourniquet 43 is elastically pressed during the process of entering the grooved tourniquet 43 into the belt feeding groove 22. Sheets are pressed tightly.

Preferably, as shown in FIG. 7 and FIG. 8 , a first installation slot 26 is opened on the left side of the distal end of the belt feeding groove 22 along the direction of the belt feeding groove 22 , and corresponding to the right side of the belt feeding groove 22 . A second installation groove 27 is opened at the position of the first installation groove 26; a first clamping strip 28 is installed in the first installation groove 26, and the first side portion of the first clamping strip 28 extends into the first installation groove 26, and the first clamping strip 28 extends into the first installation groove 26. The second side portion of a clip 28 protrudes out of the first installation slot 26, and the first side portion of the first clip 28 and the bottom of the first installation slot 26 are connected by a first reset member 30; the second installation slot A second clip 29 is installed in the 27, the first side of the second clip 29 extends into the second installation slot 27, the second side of the second clip 29 extends out of the second installation slot 27, the second The first side portion of the clip 29 and the bottom of the second installation slot 27 are connected by the second reset member 31; A curved channel for the advancement of the tourniquet 41 is formed between the bottoms of the grooves 22 . The first reset member 30 and the second reset member 31 may be a tension spring, a compression spring, a rubber member, or the like.

This arrangement can prevent the tourniquet 43 from being detached from the belt feeding groove 22 during the belt feeding process, and the belt feeding is stable. In addition, in the process that the distal end of the firing structure snaps against the ring-shaped portion of the tourniquet 43 to be inserted into the groove, the firing structure exerts a force to snap the tourniquet 43 to be inserted into the groove to act on the first clamping strip 28 and the second clamping strip 29 . A reset piece 30 and a second reset piece 31 yield, and cause the first clip 28 and the second clip 29 to retract into the first installation groove 26 and the second installation groove 27 respectively. At this time, due to the clamped tourniquet 41 and The overall thickness of the clamped blood vessel (that is, the sum of the thickness of the two layers of tourniquet 41 and the thickness of the two layers of blood vessel walls to be clamped) is relatively large, and the two sides of the entire clamped blood vessel will abut against the first clip respectively. 28 and the second clip 29, restricting the first clip 28 from protruding from the first installation slot 26, and restricting the second clip 29 from protruding from the second installation slot 27, so that after the firing structure is reset, it is easy to clamp The whole is released from the belt feed slot 22 .

Further preferably, the second side portion of the first clip 28 has a first guide surface 32 extending from the belt feed slot 22 to the inside of the belt feed slot 22, the first guide surface 32 is disposed toward the outside of the belt feed slot 22, A guide surface 32 extends from the first end of the first clamping strip 28 to the second end of the first clamping strip 28 , and the second side portion of the second clamping strip 29 has a belt extending from the belt feed slot 22 to the belt feed slot 22 . The inner second guide surface 33 is disposed toward the outside of the belt feeding slot 22 , and the second guide surface 33 extends from the first end of the second clip 29 to the second end of the second clip 29 . In this way, through the first guide surface 32 and the second guide surface 33, it is beneficial for the firing structure to apply force to snap the tourniquet 43 to be inserted into the groove to act on the first clip 28 and the second clip 29, so that the first reset member 30 and the first The second reset member 31 yields.

Further preferably, the first end of the curved channel is located at the proximal end of the belt feeding slot 22 , and the second end of the curved channel is located at the top of the hook portion 21 . , while the distal end of the tourniquet 43 to be inserted into the groove enters the belt feeding channel, the proximal end of the tourniquet 43 to be inserted into the groove is pressed by the elastic pressing piece 49 . In this way, the belt feeding stability of the tourniquet 43 to be inserted into the groove is further improved in the belt feeding groove 22, and the mechanism is prevented from being stuck.

Preferably, in this example, the firing structure, the belt feeding structure, the tape cartridge structure and the pliers arm 2 are arranged in order from top to bottom in the casing 12 . Further preferably, when the belt feeding structure is located at the end position of the distal end of the belt feeding, the tourniquet 43 to be inserted into the groove is integrally curved along the belt feeding groove 22 to form a ring-like portion.

Preferably, as shown in FIG. 2 , the distal end of the bottom surface of the belt feeding slot 22 includes an arc-shaped surface 24 and a bending surface 25 connected in sequence, and the arc-shaped surface 24 extends from the bottom of the hook portion 21 to the top of the hook portion 21 . , the direction of the arc-shaped surface 24 is consistent with the direction of the hook-shaped part 21, the bending surface 25 is located at the top of the hook-shaped part 21, the direction of the bending surface 25 deviates from the direction of the hook-shaped part 21, and the direction of the free end of the bending surface 25 is downward. The tangential direction is toward the bottom of the hook portion 21 nearer. In this way, by setting the arc surface 24, the tourniquet 41 can be bent along the direction of the hook portion 21, and by setting the bending surface 25, the tourniquet 41 can be bent downward to form a loop to wrap the blood vessel to be clamped. Further preferably, the arc-shaped surface 24 is a circular arc-shaped surface.

Further preferably, the arc-shaped surface 24 has a first connection position for connecting with the bending surface 25, the bending surface 25 has a second connection position for connecting with the arc-shaped surface 24, and the first connection position is in the far-near direction. The included angle formed by the tangential direction of the second connection position and the tangential direction of the second connection position in the far-near direction is greater than 100°.

Preferably, as shown in FIG. 3 , the distal end of the firing structure has a snapping head 51 for snapping the ring portion of the tourniquet 41 , and the distal portion of the snapping head 51 has a snapping surface adapted to the setting of the arcuate surface 24 52; During the firing process, the snapping head 51 moves farther into the hook groove of the hook-shaped portion 21. Further preferably, the bottom of the snapping head 51 is provided with a groove (not shown in the figure) for the distal end of the tape feeding piece 7 to pass through.

The belt feeding structure includes a transmission member 6 and a belt feeding piece 7 . As shown in FIG. 1 , the transmission member 6 is located inside the belt compartment 42 and is placed adjacent to the end tourniquet 41, that is, the distal end of the transmission member 6 can abut against the tail of the end tourniquet 41 to push the end tourniquet 41 when needed. end tourniquet 41, thereby pushing the remaining tourniquets 41 except the tourniquet 43 to be inserted into the groove to move to the distal end.

The transmission member 6 includes a first transmission structure capable of forming a one-way transmission connection relationship with the belt feeder 7 , and the first transmission structure may be an elastic push member 61 formed on the transmission member 6 exemplarily shown in FIG. 10 . In the natural state (that is, when the transmission member 6 is taken out from the belt magazine 42 ), the elastic push member 61 is preferably a pre-shaped elongated cantilever structure, which extends from the distal end of the transmission member 6 to the end of the transmission member 6 . The proximal end is raised above the transmission member 6 to form an included angle with the transmission member 6 , and the free end of the cantilever structure forms a first raised end 62 abutting against the belt feeder 7 . At the same time, a second transmission structure is formed on the belt feeder 7 to form a one-way transmission connection relationship with the elastic pusher 61, especially with the first raised end 62 of the elastic pusher 61. The second transmission structure is shown in FIG. 2 . Several one-way push grooves 71 are exemplarily shown and are opened at the bottom of the tape feeder 7 for engaging with the elastic push members 61 provided on the transmission member 6 .

Preferably, the proximal wall of the one-way push slot 71 is a push wall 72, and the distal wall of the one-way push slot 71 is an inclined wall 73 inclined toward the distal end; In one of the grooves 71, when the tape feeder 7 moves to the distal end of the tape magazine 42, the proximal end wall of the one-way push groove 71 and the elastic push member 61 form a push transmission in the same direction, that is, the first position of the elastic push member 61. A cocked end 62 is engaged in one of the one-way push grooves 71 and abuts against the proximal end wall in the engaged one-way push groove 71, then when the belt feeder 7 moves to the distal end, due to the cocked end The abutment of the end and the proximal wall makes the transmission member 6 move to the distal end synchronously. After the tape feeding piece 7 is fed into the curved part of the tape feeding slot 22 once, when it moves to the proximal end of the tape magazine 42 to reset, the first raised end 62 of the elastic pusher 61 is released from the state of abutting with the proximal end wall, and moves along the proximal end wall. The distal wall of the one-way push slot 71 is slid until the two are disengaged and enter into the next one-way push slot 71 .

The transmission member 6 also includes a first stop structure formed thereon for preventing the transmission member 6 from moving toward the proximal end of the belt magazine 42, and the first stop structure can be an elastic stopper 63, as shown in FIG. 9 for example As shown, the elastic stopper 63 is a stopper elastic piece provided on the transmission member 6 , and the stopper elastic piece is preferably tilted toward at least one side of the top of the belt magazine 42 in the middle in the left-right direction of the transmission member 6 . Preferably, the elastic stopper 63 is integrally protruded from the upper surface of the transmission member 6 , and its height can exceed the top of the tape compartment 42 to ensure that the elastic stopper 63 is tilted toward at least one side of the top of the tape compartment 42 . The raised end 64 can accurately engage with at least one side of the top of the tape magazine 42 , so that the transmission member 6 does not move to the proximal end when the tape feeder 7 moves toward the proximal end of the belt magazine 42 for reset.

In this example, the elastic stopper 63 is preferably shown in FIG. 9 , and includes a horizontal portion 65 and an inclined portion 66 located on the same horizontal plane and arranged at an angle to each other. The horizontal portion 65 is located farther than the inclined portion 66 and is horizontal The portion 65 is parallel to the axis of the tape magazine 42 , extends in the distal and proximal directions, and is located in the middle of the transmission member 6 in the left-right direction. The fixed end 67 of the horizontal portion 65 connected to the transmission member 6 is the distal end of the elastic stopper 63 , the other end of the horizontal portion 65 is connected to one end of the inclined portion 66 , and the inclined portion 66 is directed from the connected end to the top of the belt compartment 42 . At least one side is inclined to extend/raise to form the second raised end 64 , that is, the inclined portion 66 is inclined to extend/raise to the left and/or right from the connected end. In use, the angle between the horizontal portion 65 and the inclined portion 66 is formed to allow the transmission member 6 to move distally within the tape magazine 42 . The fixed end 67, as exemplarily shown in FIG. 10, has a substantially "T" shape.

Preferably, at the top of one of the side walls of the tape magazine 42, a side top wall 44 substantially parallel to the bottom of the tape magazine extends perpendicular to the side wall, and the side top wall 44 and the elastic stopper 63 of the transmission member 6 are approximately located At the same level, more preferably, the height of the elastic stopper 63 can be slightly higher than the side top wall 44 to ensure that the elastic stopper 63 engages with the second stop structure provided on the side top wall 44 to Undesired movement of the transmission member 6 towards the proximal end of the tape magazine 42 is avoided. The second stopper structures provided on the side top wall 44 of the belt magazine 42 may have different structures, and one of the second stopper structures is shown in this example as a one-way stopper groove 45; as shown in FIG. 10 , the open notch of the one-way stop groove 45 is horizontally facing the middle part of the top left and right directions of the belt compartment 42, so as to facilitate the elastic stopper 63 set on the transmission member 6 as a whole protruding from the middle of the transmission member 6, and the horizontal direction The top wall 44 on the side of the belt magazine 42 is lifted into the one-way stop groove 45 . The proximal wall of the one-way stop groove 45 stops the stop wall 46 , and the distal wall is a sliding wall 47 suitable for the elastic stopper 63 to slide into the next one-way stop groove 45 in the distal direction. The elastic stopper 63 is located in a one-way stopper groove 45 in a natural state. During the movement of the tape feeder 7 to the distal end of the tape magazine 42, due to the one-way transmission between the transmission member 6 and the tape feeder 7 When connected, the transmission member 6 will move to the distal end with the belt piece 7. At this time, the sliding wall 47 forms a bias on the second raised end 64 of the elastic stopper 63. As the transmission member 6 moves further to the distal end, The second raised end 64 will slide away from the original one-way stop groove 45, and enter the next one-way stop groove 45 to the far end and engage with it; The stop wall 46 of the stop groove 45 forms an abutment stop with the second raised end 64 of the elastic stop piece 63 to prevent the transmission piece 6 from sliding toward the proximal end of the tape magazine 42 .

In this example, the tourniquet 43 to be inserted into the slot is pushed by the head of the tape feeder. In order to facilitate the head of the tape feeder to push the tourniquet 43 to be inserted into the slot, preferably, at the proximal end and/or the distal end of the tourniquet The end is provided with a notch for accommodating the head of the tape feeder. In this way, a space for accommodating the head of the tape feeder is formed between the adjacent tourniquets through the notches, so that the head of the tape feeder can push the tourniquet 43 to be inserted into the groove.

During the resetting process of the belt conveyor structure, the belt conveyor structure advances toward the proximal end of the belt magazine. Due to the blocking of the adjacent adjacent tourniquets on the proximal side of the tourniquet 43 to be inserted, and the elasticity of the head of the belt conveyor, the head of the belt conveyor will pass over it. The proximally adjacent tourniquet moves to the notch 48 and stops in preparation for the next tape feeding and firing.

Example 1

As shown in FIG. 11 , on the basis of the hemostatic forceps provided in the above-mentioned specific embodiments, in the hemostatic forceps provided in this embodiment, the adapter 8 further includes a housing 83 , and the distal end of the housing 83 forms a first insertion channel 81 , The drive shaft 82 passes through the first insertion channel 81 (ie, the proximal end of the drive shaft 82 is accommodated in the housing 83 , and the distal end of the drive shaft 82 is located in the first insertion channel 81 ). The proximal end of the tube body 11 is selectively inserted into the first insertion channel 81, the drive shaft 82 is connected with the proximal end of the first actuating member, and the drive shaft 82 moves linearly along its axial direction for driving the first actuator. moving parts.

It can be seen that the working process of the hemostatic forceps mainly includes clip feeding and firing, and the clip feeding and firing work are realized in sequence, and both are realized by driving the first actuating member by the drive shaft 82 that performs linear motion. Based on this, in order to solve the problems existing in the background technology, the present application provides a hemostatic forceps with the following structure.

As shown in FIGS. 11 to 14 , the adapter 8 further includes an indicating structure for indicating the movement position of the drive shaft 82 ; the indicating structure includes a movement indicating needle 84 accommodated in the casing 83 and a movement indicating needle 84 formed on the casing 83 and associated with the movement. The observation position corresponding to the indicator needle 84 is set, and the inside of the casing 83 can be observed from the outside of the casing 83 through the observation position; the movement indicator needle 84 and the drive shaft 82 are kept in linkage setting, and the movement indicator needle 84 follows the drive shaft 82 during the movement process, The indication end of the movement indicator needle 84 always faces the observation position; the position on the observation position or on the housing 83 close to the movement trajectory of the movement indicator needle 84 indicating end is marked with at least two different diameter blood vessel types arranged from near to far. The firing is completed Indicate scale.

In this way, when the indicating end of the movement indicating needle 84 moves to the firing completion indicating scale of a certain diameter blood vessel type, the drive shaft 82 drives the tape cartridge assembly 1 to complete firing the blood vessel of that diameter. It is realized that the user can know the working process information inside the hemostatic clamp through the observation position according to the movement of the movement pointer observed outside the hemostatic clamp, and then guide the user to use the hemostatic clamp to clamp blood vessels of different thicknesses.

Preferably, in this embodiment, the observation position is the transparent cover 85 provided on the housing 83 . Of course, it is only preferable to use the transparent cover 85 provided on the casing 83 as the observation position. It is conceivable that the observation position is a through hole opened on the casing 83, and a similar effect can also be achieved.

Preferably, the movement indicator needle 84 is fixedly mounted on the drive shaft 82 perpendicular to the axial direction of the drive shaft 82 , and the movement indicator needle 84 is located at the proximal end of the drive shaft 82 . In this way, while the structure is compact, the pointer is set close to the user, which is convenient for the user to observe. Of course, disposing the motion indicator needle 84 at the proximal end of the drive shaft 82 is only preferred, and it is conceivable that a similar effect can be achieved by disposing the motion indicator needle 84 at the middle or distal end of the drive shaft 82 .

Further preferably, in this embodiment, the movement indicating needle 84 and the transparent cover 85 are both arranged on the left side of the drive shaft 82 . In this way, when the user holds the hemostatic forceps with the right hand, it is convenient for the user to observe the movement of the movement indicator needle 84 .

Further preferably, in this embodiment, the transparent cover 85 is a waist shape extending in the far and near directions.

Further preferably, in this embodiment, the firing completion indication scales of blood vessel types with different diameters are marked on the transparent cover 85 .

Further preferably, on the observation position or on the housing 83, the position close to the motion trajectory of the indication end of the motion indicator needle 84 is marked with three firing completion indication scales of different diameter blood vessel types, and the firing completion indication scales of the three different diameter blood vessel types are respectively: The firing completion indicator scale 86 for thick blood vessels, the firing completion indicator scale 87 for medium blood vessels, and the firing completion indicator scale 88 for thin blood vessels are arranged from near to far; Medium-sized blood vessels refer to blood vessels with a diameter of 3 to 5 mm, while thin blood vessels refer to blood vessels with a diameter of 1 to 3 mm.

Of course, on the observation position or the position on the housing 83 near the motion trajectory of the indication end of the motion indicator needle 84, there are two firing completion indication scales for blood vessel types with different diameters, and the firing completion indication scales for the two blood vessel types with different diameters are respectively given by The firing completion indicator scale 86 for thick blood vessels and the firing completion indicator scale 88 for thin blood vessels are arranged from near to far; wherein, thick blood vessels refer to blood vessels with a diameter of 4 to 7 mm, and thin blood vessels refer to blood vessels with a diameter of 1 to 4 mm. of blood vessels. A similar effect can also be achieved.

Further preferably, the lengths of the firing completion indication scales of the three different diameter blood vessels are different, wherein the firing completion indication scale 86 of the thick blood vessel is the longest, and the firing completion indication scale 88 of the thin blood vessel is the shortest.

In order to further clearly distinguish the firing completion indication scales of different diameter blood vessel types, in this embodiment, the position of the transparent cover 85 corresponding to each firing completion indication scale is marked with the marks "L", "L", "M" or "S", where "L" indicates a large vessel, "M" indicates a medium vessel, and "S" indicates a small vessel.

Preferably, as shown in FIG. 11 , the hemostatic forceps further includes a drive assembly 91 ; the adapter 8 further includes a second actuating member, a second insertion channel 89 is formed on the housing 83 , and the power input end of the second actuating member is located in the first actuating member. In the two insertion passages 89 , the power output end of the second actuating member is accommodated in the housing 83 and connected with the drive shaft 82 for driving the drive shaft 82 ; the drive assembly 91 can be selectively inserted into the second insertion passage 89 , the power output end of the driving assembly 91 is connected with the power input end of the second actuating member for driving the second actuating member. The adaptor 2 thus set, in the case of electrical failure during use, can select the manpower drive assembly 91 to be plugged into the second insertion channel 89, and can realize the prompt function of the motion indicator needle 84 while realizing the function of feeding the clip and the function of firing. , that is to say, the hemostatic forceps provided in this embodiment can still display the working process information of the hemostatic forceps to the user under the condition of electrical failure, and guide the user to complete the surgical operation.

Further preferably, in this embodiment, the second insertion channel 89 is formed at the bottom of the housing 83 , the hemostatic forceps further includes a handle 9 , the drive assembly 91 is accommodated in the handle 9 , and the power output end of the drive assembly 91 extends out of the handle 9 The top end of the handle 9 is selectively inserted into the second insertion channel 89, and the power output end of the drive assembly 91 is connected with the power input end of the second actuating member.

Preferably, as shown in FIG. 12 , the adapter 8 further includes a control unit, a prompt unit, and a displacement sensor 92 arranged on the drive shaft 82 . The control unit determines the current travel information of the firing structure according to the displacement data and the preset travel trajectory of the firing structure, and outputs the determination result through the prompting unit. In this way, on the basis of the mechanical structure displaying the internal working process information of the hemostatic forceps, the integrated electrical control displays the internal working process information of the hemostatic forceps, which is more convenient to guide the user to perform the operation of clamping blood vessels.

Further, the reminder unit may be a display unit or a playback unit, preferably a display unit, specifically a display screen. Through the display unit, the user can see the working process information inside the hemostatic forceps during the clip application operation.

Specifically, in this embodiment, the display unit is a display screen integrated at the proximal end of the adapter 8 .

Example 2

The main difference between this embodiment and Embodiment 1 is:

The adapter 8 includes a first movement indicator needle and a second movement indicator needle that are accommodated in the housing 21 and are kept in linkage with the drive shaft. The housing 21 has a first transparent cover and a second transparent cover. The indicator end of the first movement indicator needle Facing the first transparent cover, the indicating end of the second movement indicator needle faces the second transparent cover, the movement process of the first movement indicator needle indicating end following the drive shaft all occurs in the first transparent cover, and the second movement indicating needle indicating end follows the drive All the movement of the shaft takes place in the second transparent cover. The positions of the first transparent cover and the second transparent cover near the movement track of the indication end of the movement indicator needle are marked with at least two firing completion indication scales of blood vessel types of different diameters arranged from near to far. In this way, it is further convenient for the user to observe the movement of the movement indicator needle.

Preferably, the first movement indicator needle and the first transparent cover are arranged on the left side of the drive shaft, and the second movement indicator needle and the second transparent cover are arranged at the right side of the drive shaft.

The rest of the points that are the same as those in Embodiment 1 will not be repeated here.

Example 3

The main difference between this embodiment and Embodiment 1 is:

The indicating structure also includes an amplifying structure for amplifying the range of mechanical motion, the amplifying structure has a motion input end and a motion amplifying output end, the motion input end of the amplifying structure is connected with the drive shaft 82, and the motion amplifying output end of the amplifying structure is connected with the motion indicating needle 84 connect. In this way, the range of motion occurring on the drive shaft 82 for adjusting the firing stroke is amplified by the magnifying structure, so as to be displayed by the motion indicator needle 84, which is convenient for the user to observe.

It should be understood that the above description of the specific embodiments of the present invention is only to illustrate the technical route and characteristics of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, but the present invention Not limited to the specific embodiments described above. Any changes or modifications made within the scope of the claims of the present invention should be covered within the protection scope of the present invention.

Claims (10)

1. A hemostat, comprising an adapter (8) and a cartridge assembly (1);

the belt cabin assembly (1) comprises a first actuating piece, a belt cabin structure, a belt conveying structure, an actuating structure, a clamp arm (2), a pipe body (11) and a sleeve (12) which are fixedly communicated in sequence from near to far;

the first actuating piece is accommodated in the tube body (11); the band bin structure comprises at least one strip-shaped tourniquet (41) and a band bin (42) for accommodating at least one strip-shaped tourniquet (41) which are sequentially arranged in the far and near direction, and the band bin structure is accommodated in the sleeve (12) and is fixedly connected with the sleeve (12); the near end of the forceps arm (2) is fixedly arranged in the sleeve (12), the far end of the forceps arm (2) is provided with a hook part (21) extending out of the sleeve (12), a belt conveying groove (22) is formed in the forceps arm (2), the near end of the belt conveying groove (22) is positioned in the sleeve (12) and communicated with the space in the belt cabin (42) to form a belt conveying channel, and the far end of the belt conveying groove (22) is positioned on the inner side of the hook part (21) and is bent along the shape of the hook part (21); the proximal end of the tape-feeding structure is connected with the first actuating component, the distal end of the tape-feeding structure is inserted into the sleeve (12), and the tape-feeding structure is matched with the tourniquet (41); the firing structure is arranged in the sleeve in a penetrating way, the near end of the firing structure is connected with the first actuating piece, and the far end of the firing structure is matched with the hook part (21);

in the process of clamping and closing the blood vessel, the tourniquet (41) positioned at the farthest end of the tape-feeding channel is a tourniquet (43) to be subjected to groove-feeding, the first actuating piece drives the tape-feeding structure to move far, all the tourniquets (41) in the tape-feeding channel are pushed to move far, and when the tape-feeding structure is positioned at the end position of the far end of the tape-feeding, the far end of the tourniquet (43) to be subjected to groove-feeding is bent into an annular part along the shape of the tape-feeding groove (22); the first actuating piece drives the firing structure to move far, and the annular part of the tourniquet (43) to be inserted into the slot is patted;

the adapter (8) comprises a shell (83) and an indicating structure, wherein a first insertion channel (81) is formed at the far end of the shell (83), and a driving shaft (82) penetrates through the first insertion channel (81); the proximal end of the tube body (11) is inserted into the first insertion channel (81), and the driving shaft (82) is connected with the proximal end of the first actuating piece;

the indicating structure comprises a movement indicating needle (84) accommodated in the shell (83) and an observation position which is formed on the shell (83) and is arranged corresponding to the movement indicating needle (84); the motion indicating needle (84) is arranged in a linkage manner with the driving shaft (82), and in the process that the motion indicating needle (84) moves along with the driving shaft (82), the indicating end of the motion indicating needle (84) is always positioned in the observation position; at the observation position or the position on the shell (83) close to the motion trail of the motion indicating needle indicating end, firing completion indicating scales of at least two blood vessel types with different diameters are marked from near to far.

2. The hemostat of claim 1,

the indicating structure further comprises an amplifying structure for amplifying the mechanical motion amplitude, wherein the motion input end of the amplifying structure is connected with the driving shaft (82), and the motion amplifying output end of the amplifying structure is connected with the motion indicating needle (84).

3. The hemostat of claim 1,

the observation position is a transparent cover (85) arranged on the shell (83).

4. The hemostat of claim 3,

the transparent cover (85) is waist-shaped extending along the far and near direction.

5. The hemostat of claim 1,

the motion indicator needle (84) is fixedly arranged on the driving shaft (82) perpendicular to the axial direction of the driving shaft (82), and the motion indicator needle (84) is arranged at the proximal end of the driving shaft (82).

6. The hemostat of claim 1,

three blood vessel type firing completion indicating scales with different diameters are marked on the observation position or the position, close to the motion track of the indication end of the motion indication needle, on the shell (83), and are respectively a thick blood vessel firing completion indicating scale (86), a medium blood vessel firing completion indicating scale (87) and a thin blood vessel firing completion indicating scale (88) which are arranged from near to far.

7. The hemostat of claim 6,

the lengths of the firing completion indication scales of the three blood vessel types with different diameters are different;

wherein, the firing completion indication scale (86) of the thick blood vessel is the longest, and the firing completion indication scale (88) of the thin blood vessel is the shortest.

8. Hemostatic forceps according to claim 6 or 7,

the position of the transparent cover (85) or the shell (83) corresponding to each firing completion indication scale is marked with a mark L, M or S of the diameter blood vessel type to which the firing completion indication scale belongs, wherein L represents a thick blood vessel, M represents a medium blood vessel, and S represents a small blood vessel.

9. The hemostat of claim 1,

the adapter (8) further comprises a second actuator;

the housing (83) is formed with a second insertion channel (89) for selectively inserting the driving assembly, the power output end of the second actuator is accommodated in the housing (83) and connected with the driving shaft (82), and the power input end of the second actuator is positioned in the second insertion channel (89) and connected with the driving assembly.

10. The hemostat of claim 1,

the adapter (8) further comprises a control unit, a prompting unit and a displacement sensor (92) arranged on the driving shaft (82), the displacement sensor (92) and the prompting unit are both in communication connection with the control unit, the displacement sensor (92) collects displacement data of the driving shaft (82), the control unit determines current stroke information of the firing structure according to the displacement data and a preset stroke track of the firing structure, and a determination result is output through the prompting unit.

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