CN102626335A - Hemostatic clamp with four-bar structure - Google Patents

Abstract

The invention relates to a hemostatic clamp with a four-bar structure, which comprises a clamp head part, an outer tube part, an inhaul cable and a handle, wherein the inhaul cable is connected with the handle through a sliding ring, the outer pipe part is fixedly connected with the handle, the clamp head part consists of two clamp heads and two connecting poles, the clamp handle and the connecting pole of each clamp head form a four-bar structure, the two clamp heads are pin-jointed on a clamp head seat, the clamp head seat is connected with the outer tube part, and the two connecting poles are pin-jointed on a pull rod arranged on the front end of the inhaul cable. According to the hemostatic clamp, the sliding ring slides on the handle to pull the inhaul cable to move front and back; and the pull rod drives the four-bar structure to move, thus the clamp heads are closed and opened. The hemostatic clamp can be repeatedly flexibly opened and closed, and is most suitable for a treating device for hemostasis in body cavity.

Description

A kind of hemostatic clamp of four-bar linkage structure

Technical field

The present invention relates to a kind of operating theater instruments that is used for medical examination; Be specially a kind of four-bar linkage structure hemostatic clamp; Being used under endoscope, 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 method.And in the present various hemostasis methods that adopt, hemostatic clamp hemostasis has the advantage that wound is little, anthemorrhagic speed is fast, complication is few, and determined curative effect has become the important method of the non-operative treatment of treatment 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 grasped, 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.

Hemostatic clamp of the present invention, the four-bar linkage structure of employing because have a pair of can free active connecting rod; Before the hemostatic clamp locking is placed, can repeatedly repeat closure, behind the diseased region of location; Apply certain function power again, press and tighten up hemostatic clamp slightly, confirm to leave disconnected hemostatic clamp after hemostatic clamp has clipped focus; Take out applier, confirm that treatment is finished in the hemostasis back fully.

Summary of the invention

The technical problem that the present invention will solve 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 open closed flexibly, be suitable for a kind of therapy equipment of hemostatic in the body cavity most.

The technical scheme that the present invention adopted is: a kind of hemostatic clamp of four-bar linkage structure, have clamp part, outer tube parts, drag-line and handle, and drag-line links to each other with handle through slip ring; The outer tube parts are fixedly connected with handle, and clamp part is made up of two chucks and two connecting rods, and the clamp holder of chuck and connecting rod are formed four-bar linkage structure; This chuck can be made through the technology of punching press or casting, and the chuck head has miniature toothed projections, can prevent that the biological tissue of gripping from skidding; 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, and two link pins are connected on the pull bar that is arranged at the drag-line front end; Described hemostatic clamp, through the slip of slip ring on handle, the pulling drag-line seesaws; Drive the four-bar linkage structure motion through pull bar, the closure that realizes chuck with open.

Further, the pin joint hole of pull bar front end of the present invention is the semi-surrounding form, and the opening of semi-surrounding is less than the diameter of pin; Described hemostatic clamp is when the bigger 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 of the present invention 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 of the present invention 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 convexity 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 of the present invention, 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 accomplish the fixing of drag-line and pull bar.The welding procedure that this fixing means has no, thus the reliability that drag-line is connected with pull bar guaranteed.

The invention has the beneficial effects as follows: the hemostatic clamp of four-bar linkage structure of the present invention has overcome old-fashioned hemostatic clamp can not repeat closed defective, can be repeatedly open closed, more reliable flexibly, for being suitable for most a kind of therapy equipment of hemostatic in the body cavity.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Fig. 1 is the structural representation of the preferred embodiments of the present invention;

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

Fig. 3 is the structural representation of adapter sleeve of the present invention;

Fig. 4 is the fit structure sketch map of pull bar and clamp part among the present invention;

Fig. 5 is the assembly structure sketch map of connection-core and Connection Block among the present invention;

Fig. 6 is the connected mode sketch map of pull bar and drag-line among the present invention;

Fig. 7 is the plane graph of clamp part first closure state among the present invention;

Fig. 8 is the floor map of clamp part open mode among the present invention;

Fig. 9 is that clamp part is closed into the floor map about half among the present invention;

Figure 10 is the closed fully floor map of clamp part among the present invention;

Figure 11 is among the present invention after the complete closure of clamp part, and base of the carrier head is retracted into the floor map about half backward;

Figure 12 is among the present invention after the complete closure of clamp part, and base of the carrier head is retracted into the floor map of assigned address backward;

Figure 13 is among the present invention after the complete closure of clamp part, after base of the carrier head is retracted into assigned address backward, and the floor map that pull bar begins to break away from;

Figure 14 is among the present invention after the complete closure of clamp part, after base of the carrier head is retracted into assigned address backward, and the floor map after pull bar breaks away from fully;

Figure 15 is a clamp part and the fixing floor map that breaks away from after moving of accomplishing among the present invention.

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. pins, 12. Connection Blocks, 13. outer spring pipes.

The specific embodiment

Combine accompanying drawing and preferred embodiment that the present invention is done further detailed explanation now.These accompanying drawings are the sketch map of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.

With reference to Fig. 7 to Figure 15 the clinical specific embodiment of the present invention 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 closurestate.Adapter sleeve 10 closely connects through connection-core 9 withConnection Block 12, andouter spring pipe 13 is fixed on theConnection Block 12 through laser weld, can control the advance and retreat of hemostatic clamp assembly throughouter spring pipe 13.

With reference to Fig. 8; Slide to the clamp part direction throughhandle 8slip rings 7, boost tube 7-1 is fixed on theslip ring 7, and boost tube 7-1 also drives drag-line 5 to front slide together; Drag-line 5 is fixing through fixed cover 6-3 and pullbar 6; When drag-line 5 forward the time, promote two connectingrods 2 on the quadric chain, drivehemostasis chuck 1 and open.Because adopted quadric chain, after opening, can be throughslip ring 7 front and back on thejoystick 8, open closedhemostasis chuck 1 repeatedly, for confirmationly clip to suitable position.

With reference to Fig. 9, Fig. 1, through tightening upslip ring 7, reverse and clamp part slides, and thechuck 1 that can closedly stop blooding is controlled biological tissue.

With reference to Figure 10, Fig. 1 through continuing to tighten uphandle 8slip rings 7, oppositely slides with clamp part, can closed basically fullyhemostasis chuck 1, can confirm haemostatic effect at this moment, if poor effect can repeat above two steps, till the ideal haemostatic effect of generation.

With reference to Figure 11; Fig. 1, through continuing to tighten uphandle 8slip rings 7, this moment is becauseadapter sleeve 10 is to be fixed in the draw-in groove 3-1 on the base of thecarrier head 3 through strain through the dop 10-1 on theadapter sleeve 10; When the dop 10-1 of adapter sleeve receives certain pulling force; Because have bar-shaped trough 10-2 on theadapter sleeve 10, the meeting of adapter sleeve is because strain makes base of the carrier head indentation adapter sleeve.The effect that produces is the correspondingly connectingrod 2 of four connecting rod structures of hemostasis by compression folder of adapter sleeve, because four connecting rod structures of hemostatic clamp are inflexible, thereby also impels thechuck 1 of hemostatic clamp to be further closed, and compresses the biological tissue in the chuck.

With reference to Figure 12, through continuing to tighten uphandle 8slip rings 7, reverse and clamp part slides; When this moment, base of thecarrier head 3 continuation were moved backward; The end of base of thecarrier head 3 can contact with the interior step ofadapter sleeve 10, and this moment, base of thecarrier head 3 was accomplished with the relative motion ofadapter sleeve 10; In this moment,adapter sleeve 10 also was included in connectingrod 2 parts of four connecting rods fully, thus the locking of the hemostasis chuck of accomplishing 1.

With reference to Figure 13, through continuing to tighten uphandle 8slip rings 7, reverse and clamp part slides; After base of thecarrier head 3 andadapter sleeve 10 relative motioies were accomplished, continued to tighten upslip ring 7 this moment, because the pin joint hole 6-1 ofpull bar 6 front ends is the semi-surrounding form; The opening of semi-surrounding is less than the diameter ofpin 11, and the hemostatic clamp of this moment is when the bigger pulling force of drag-line 5, and the pin joint hole 6-1 of the semi-surrounding ofpull bar 6 is out of shape;Pull bar 6 left with pin in 11 minutes; Realize the disengaging of drag-line 5 and clamp part, pullbar 6 separated a bit of distance in back withpin 11 after, the semi-surrounding position ofpull bar 6 front ends can contact with connection-core 9.

With reference to Figure 14, Fig. 1 is through continuing to tighten uphandle 8slip rings 7; Reverse and clamp part slides, and afterpull bar 6 andpin 11 disengaging actions are accomplished, continues to tighten upslip ring 7 this moment; Because the semi-surrounding position ofpull bar 6 front ends can contact with connection-core 9, have notch in the middle of the connection-core 9, after receiving certain pulling force backward; Can be to internal strain, pullbar 6 will drive connection-core 9 and move backward.Becauseadapter sleeve 10 links together through connection-core 9 andConnection Block 12, after connection-core 9 moved backward,adapter sleeve 10 had not just had annexation withConnection Block 12, thereby had accomplished the disengaging ofadapter sleeve 10 andConnection Block 12.

With reference to Figure 15, be the design sketch after the disengaging ofadapter sleeve 10 andConnection Block 12, accomplished the basic acts of hemostasis operation this moment, this moment as long as withremaining Connection Block 12 throughouter spring pipe 13, outwards extract from endoscope, withdraw from, just accomplished whole operation.

What describe in the above description is the specific embodiment of the present invention; Various not illustrating constitutes restriction to flesh and blood of the present invention; Under the those of ordinary skill of 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 (5)

1. the hemostatic clamp of a four-bar linkage structure has clamp part, outer tube parts, drag-line (5) and handle (8), and drag-line (5) links to each other with handle (8) through slip ring (7); The outer tube parts are fixedly connected with handle (8), it is characterized in that: clamp part is made up of two chucks (1) and two connecting rods (2), and the clamp holder (4) of chuck (1) is formed 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 on the pull bar (6) that is arranged at drag-line (5) front end, described hemostatic clamp; Through the slip of slip ring (7) on handle (8); Pulling drag-line (5) seesaws, and drives the four-bar linkage structure motion through 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 is characterized in that: the outer tube parts are made up of outer tube (9) and adapter sleeve (10), and 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 bigger pulling force of drag-line (5), the strain through 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 when the bigger 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 convexity 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.

Images