CN202776449U

CN202776449U - Hemostasis clamp with four-bar linkage structure

Info

Publication number: CN202776449U
Application number: CN201220160369.5U
Authority: CN
Inventors: 徐红; 李国来; 朱伟
Original assignee: CHANGZHOU JIUHONG MEDICAL INSTRUMENT Co Ltd
Current assignee: CHANGZHOU JIUHONG MEDICAL INSTRUMENT Co Ltd
Priority date: 2012-04-16
Filing date: 2012-04-16
Publication date: 2013-03-13
Anticipated expiration: 2022-04-16

Abstract

The utility model relates to a hemostasis clamp with a four-bar linkage structure. The hemostasis clamp with the four-bar linkage structure comprises a clamp head part, an outer tube part, an inhaul cable and a handle. The inhaul cable is connected with the handle through a slide ring. The outer tube part is fixedly connected with the handle. The clamp head part is formed by two clamp heads and two connecting rods. Clamp holders of the clamp heads and the connecting rods form the four-bar linkage structure. The two clamp heads are in hinged connection on a clamp head seat. The clamp head seat is connected with the outer tube part. Two connecting rods are in hinged connection with a draw rod arranged at the front end of the inhaul cable. According to the hemostasis clamp with the four-bar linkage structure, the inhaul is pulled to move back and forth through slide of the slide ring on the handle, and the four-bar linkage structure is driven to move through the draw rod so that close and open of the clamp heads are achieved. The hemostasis clamp with the four-bar linkage structure can be flexibly opened and closed for many times and is a treatment device extremely suitable for hemostasis in a body cavity.

Description

The hemostatic clamp of four-bar linkage structure

Technical field

This utility model relates to a kind of operating theater instruments for medical examination, be specially a kind of four-bar linkage structure hemostatic clamp, being used at Microendoscopic, making wound two edge of bio-tissue involutory or prevent little angiorrbagia, is one of necessary apparatus when carrying out endoscope minimally invasive operation.

Background technology

In clinical medicine was used, digestive tract hemorrhage was common clinical symptoms.Endoscope hemostasis more and more becomes one of first-selected Hemostasis.And in the currently used various Hemostasis, hemostatic clamp hemostasis has that wound is little, anthemorrhagic speed fast, the advantage of few intercurrent disease, and determined curative effect has become the important method of the non-operative treatment for the treatment of digestive tract hemorrhage.Its ultimate principle is to utilize the little hemostatic clamp of special metal, directly hemorrhage blood vessel or the mucosa torn is clamped, the effect of playing the mechanical pressure hemostasis and sewing up.Its effectiveness has obtained certainly, but now on the market hemostatic clamp of traditional form exist an actual operation quite important in using, but indeterminable problem can not repeat closure exactly, a hemostatic clamp apparatus, can only closure once.Inconvenient hemostatic clamp is reorientated at diseased region.

This utility model hemostatic clamp, the four-bar linkage structure that adopts, because a pair of freely connecting rod of activity is arranged, before the hemostatic clamp locking is placed, can repeatedly repeat closure, behind the diseased region of location, apply again certain active force, slightly press and tighten up hemostatic clamp, determine that hemostatic clamp has clipped after the focus from disconnected hemostatic clamp, take out applier, determine to finish treatment after the fully hemostasis.

The utility model content

The technical problems to be solved in the utility model is: in order to solve the deficiency that existing hemostatic clamp exists in the above-mentioned background technology, a kind of improved four-bar linkage structure hemostatic clamp is provided, its objective is provides a kind of reliable, can be repeatedly flexible open closed, be best suited for a kind of therapy equipment of hemostasis in the body cavity.

The technical scheme that its technical problem that solves this utility model adopts is: a kind of hemostatic clamp of four-bar linkage structure, has clamp part, the outer tube parts, drag-line and handle, drag-line links to each other with handle by slip ring, the outer tube parts are fixedly connected with handle, clamp part is comprised of two chucks and two connecting rods, the clamp holder of chuck and connecting rod form four-bar linkage structure, this chuck can be made by the technique of punching press or casting, the chuck head has miniature toothed projections, the biological tissue that can prevent gripping skids, and two clamper pins are connected on the base of the carrier head, and base of the carrier head is connected with the outer tube parts, two link pins are connected on the pull bar that is arranged at the drag-line front end, described hemostatic clamp, by the slip of slip ring on handle, the pulling drag-line seesaws, drive the four-bar linkage structure motion by pull bar, the closure that realizes chuck with open.

Further, the pin joint hole of pull bar front end described in the utility model is the semi-surrounding form, and the opening of semi-surrounding is less than the diameter of pin, described hemostatic clamp is when the larger pulling force of drag-line, the pin joint bore deformation of the semi-surrounding of pull bar, pull bar separates with pin, realizes the disengaging of drag-line and clamp part.

Further, also be provided with Connection Block between the outer tube of outer tube parts described in the utility model and adapter sleeve, adapter sleeve is connected by connection-core with Connection Block, described connection-core be suitable for by after the pull bar that moves promote and break away from and being connected of adapter sleeve.

Further, connection-core described in the utility model be suitable for by after the pull bar that moves promote and the syndeton that breaks away from adapter sleeve is, radially closing up of adapter sleeve is buckled in the notch of connection-core outer ring, and the projection before the connection-core notch is suitable for being withdrawed from and the cooperating of adapter sleeve as radial contraction by the pull bar compressing.

Further, have a breach on the pull bar described in the utility model, drag-line is the steel wire of 0.20～0.35 diameter, after drag-line bends to U-shaped, pass fixed cover, the U-shaped front end of drag-line hangs over the indentation, there of bar, again fixed cover is put, thereby finish the fixing of drag-line and pull bar.This fixing means without any welding procedure, thereby guaranteed the reliability that drag-line is connected with pull bar.

The beneficial effects of the utility model are, the hemostatic clamp of four-bar linkage structure of the present utility model has overcome old-fashioned hemostatic clamp can not repeat closed defective, can be repeatedly flexible open closed, more reliable, for being best suited for a kind of therapy equipment of stopping blooding in the body cavity.

Description of drawings

Below in conjunction with drawings and Examples this utility model is further specified.

Fig. 1 is the structural representation of preferred embodiment of the present utility model;

Fig. 2 is the structural representation after four shaft portion of hemostatic clamp collet segment of the present utility model add base of the carrier head;

Fig. 3 is the structural representation of adapter sleeve described in the utility model;

Fig. 4 is the fit structure sketch map of pull bar and clamp part in this utility model;

Fig. 5 is the assembly structure sketch map of connection-core and Connection Block in this utility model;

Fig. 6 is the connected mode sketch map of pull bar and drag-line in this utility model;

Fig. 7 is the plane graph of clamp part first closure state in this utility model;

Fig. 8 is the floor map of clamp part open mode in this utility model;

Fig. 9 is that clamp part is closed into floor map about half in this utility model;

Figure 10 is the fully closed floor map of clamp part in this utility model;

Figure 11 is in this utility model after the complete closure of clamp part, and the base of the carrier head receding enters the floor map about half;

Figure 12 is in this utility model after the complete closure of clamp part, and the base of the carrier head receding enters the floor map of assigned address;

Figure 13 is in this utility model after the complete closure of clamp part, after the base of the carrier head receding enters assigned address, and the floor map that pull bar begins to break away from;

Figure 14 is in this utility model after the complete closure of clamp part, after the base of the carrier head receding enters assigned address, and the floor map after pull bar breaks away from fully;

Figure 15 is clamp part and the floor map of fixedly finishing after disengaging is moved in this utility model.

Among the figure: 1. chuck, 2. connecting rod, 3. base of the carrier head, 3-1. draw-in groove, 4. clamp holder, 5. zip, 6. pull bar, 6-1. pin joint hole, 6-2. breach, 6-3. fixed cover, 7. slip ring, 7-1. boost tube, 8. handle, 9. connection-core, 10. adapter sleeve, 10-1. dop, 10-2. bar-shaped trough, 11. pin, 12. Connection Blocks, 13. outer spring pipes.

The specific embodiment

With preferred embodiment this utility model is described in further detail by reference to the accompanying drawings now.These accompanying drawings are the sketch map of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with this utility model.

With reference to Fig. 7 to Figure 15 the clinical specific embodiment of the present utility model is described.

With reference to Fig. 7, a kind of four-bar linkage structure hemostatic clamp assembly can extend through smoothly in the passage of endoscope, and be inserted in the body cavity at the first closure state.Adapter sleeve 10 closely connects by connection-core 9 with Connection Block 12, and outer spring pipe 13 is fixed on the Connection Block 12 by laser weld, can control by outer spring pipe 13 advance and retreat of hemostatic clamp assembly.

With reference to Fig. 8, slide to the clamp part direction by handle 8 slip rings 7, boost tube 7-1 is fixed on the slip ring 7, boost tube 7-1 also drives drag-line 5 to front slide together, drag-line 5 is fixing by fixed cover 6-3 and pull bar 6, when drag-line 5 forward the time, promote two connecting rods 2 on the quadric chain, drive hemostasis chuck 1 and open.Because adopted quadric chain, after opening, can be by slip ring 7 front and back on the joystick 8, open closed hemostasis chuck 1 repeatedly, for confirmationly clip to suitable position.

With reference to Fig. 9, Fig. 1, by tightening up slip ring 7, reverse and clamp part slides, and the chuck 1 that can closedly stop blooding is controlled biological tissue.

With reference to Figure 10, Fig. 1, by continuing to tighten up handle 8 slip rings 7, reverse and clamp part slides, and closure hemostasis chuck 1 can be confirmed haemostatic effect at this moment, if poor effect can repeat above two steps, until produce desirable haemostatic effect substantially fully.

With reference to Figure 11, Fig. 1, by continuing to tighten up handle 8 slip rings 7, this moment is because adapter sleeve 10 is to be fixed in the draw-in groove 3-1 on the base of the carrier head 3 by strain by the dop 10-1 on the adapter sleeve 10, when the dop 10-1 of adapter sleeve is subject to certain pulling force, because have bar-shaped trough 10-2 on the adapter sleeve 10, the meeting of adapter sleeve is because strain makes base of the carrier head indentation adapter sleeve.Produce an effect is the correspondingly connecting rod 2 of four connecting rod structures of hemostasis by compression folder of adapter sleeve, because four connecting rod structures of hemostatic clamp are rigidity, thereby also impels the chuck 1 of hemostatic clamp to be further closed, and compresses the biological tissue in the chuck.

With reference to Figure 12, by continuing to tighten up handle 8 slip rings 7, reverse and clamp part slides, when this moment, base of the carrier head 3 continuation were moved backward, the end of base of the carrier head 3 can contact with the interior step of adapter sleeve 10, and this moment, base of the carrier head 3 was finished with the relative motion of adapter sleeve 10, in this moment, adapter sleeve 10 also was included in connecting rod 2 parts of four connecting rods fully, thus the locking of the hemostasis chuck 1 of finishing.

With reference to Figure 13, by continuing to tighten up handle 8 slip rings 7, reverse and clamp part slides, after base of the carrier head 3 and adapter sleeve 10 relative motioies are finished, continue to tighten up slip ring 7 this moment, because the pin joint hole 6-1 of pull bar 6 front ends is the semi-surrounding form, the opening of semi-surrounding is less than the diameter of pin 11, the hemostatic clamp of this moment is when the larger pulling force of drag-line 5, the pin joint hole 6-1 distortion of the semi-surrounding of pull bar 6, pull bar 6 separates with pin 11, realizes the disengaging of drag-line 5 and clamp part, after pull bar 6 and a bit of distance after pin 11 separates, the semi-surrounding position of pull bar 6 front ends can contact with connection-core 9.

With reference to Figure 14, Fig. 1, by continuing to tighten up handle 8 slip rings 7, reverse and clamp part slides, after pull bar 6 and pin 11 disengaging actions are finished, continue to tighten up slip ring 7 this moment, because the semi-surrounding position of pull bar 6 front ends can contact with connection-core 9, have notch in the middle of the connection-core 9, after being subject to certain pulling force backward, can be to internal strain, pull bar 6 will drive connection-core 9 and move backward.Because adapter sleeve 10 links together by connection-core 9 and Connection Block 12, after connection-core 9 moved backward, adapter sleeve 10 and Connection Block 12 had not just had annexation, thereby had finished the disengaging of adapter sleeve 10 and Connection Block 12.

With reference to Figure 15, be the design sketch after the disengaging of adapter sleeve 10 and Connection Block 12, finished the basic acts of hemostasis operation this moment, withdraw from as long as Connection Block 12 that will be remaining by outer spring pipe 13, outwards extracts from endoscope this moment, just finished whole operation.

What describe in the above description is the specific embodiment of the present utility model, various not illustrating is construed as limiting flesh and blood of the present utility model, the person of an ordinary skill in the technical field after having read description can to before the described specific embodiment make an amendment or be out of shape, and do not deviate from essence of an invention and scope.

Claims

1. the hemostatic clamp of a four-bar linkage structure, has clamp part, the outer tube parts, drag-line (5) and handle (8), drag-line (5) links to each other with handle (8) by slip ring (7), the outer tube parts are fixedly connected with handle (8), it is characterized in that: clamp part is comprised of two chucks (1) and two connecting rods (2), the clamp holder (4) of chuck (1) forms four-bar linkage structure with connecting rod (2), two chucks (1) pin joint is on base of the carrier head (3), base of the carrier head (3) is connected with the outer tube parts, two connecting rods (2) pin joint is on the pull bar (6) that is arranged at drag-line (5) front end, described hemostatic clamp, by the slip of slip ring (7) on handle (8), pulling drag-line (5) seesaws, and drives the four-bar linkage structure motion by pull bar (6), the closure that realizes chuck (1) with open.

2. the hemostatic clamp of a kind of four-bar linkage structure according to claim 1, it is characterized in that: the outer tube parts are comprised of outer tube and adapter sleeve (10), front end is adapter sleeve (10), the department of assembly of base of the carrier head (3) is arranged in the adapter sleeve (10), draw-in groove (3-1) is set on the base of the carrier head (3), dop (10-1) is set on the adapter sleeve (10), base of the carrier head (3) passes through dop (10-1) and draw-in groove (3-1) clamping with adapter sleeve (10), described hemostatic clamp, when the larger pulling force of drag-line (5), strain by dop (10-1) skids off draw-in groove (3-1), can draw in adapter sleeve (10) to whole base of the carrier head (3).

3. the hemostatic clamp of a kind of four-bar linkage structure according to claim 1, it is characterized in that: the pin joint hole (6-1) of pull bar (6) front end is the semi-surrounding form, the opening of semi-surrounding is less than the diameter of pin (11), described hemostatic clamp is when the larger pulling force of drag-line (5), the pin joint bore deformation of the semi-surrounding of pull bar (6), pull bar (6) separates with pin (11), realizes the disengaging of drag-line (5) and clamp part.

4. the hemostatic clamp of a kind of four-bar linkage structure according to claim 1, it is characterized in that: also be provided with Connection Block (12) between the outer tube of outer tube parts and adapter sleeve (10), adapter sleeve (10) is connected by connection-core (9) with Connection Block (12), described connection-core (9) be suitable for by after the pull bar (6) that moves promote and break away from and being connected of adapter sleeve (10).

5. the hemostatic clamp of a kind of four-bar linkage structure according to claim 4, it is characterized in that: described connection-core (9) be suitable for by after the pull bar (6) that moves promote and the syndeton that breaks away from adapter sleeve (10) is, the radially closing in of adapter sleeve (10) is buckled in the notch of connection-core (9) outer ring, and the projection before connection-core (9) notch is suitable for being withdrawed from and the cooperating of adapter sleeve (10) as radial contraction by pull bar (6) compressing.