Hemostatic forceps

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to hemostatic forceps which comprise a hemostatic forceps body and a conveying assembly used for conveying the hemostatic forceps body, the hemostatic forceps body comprises a forceps seat and two movable forceps arms, the forceps seat comprises an annular sleeve and two supporting arms, the annular sleeve is used for locking the movable forceps arms in a closed state, and the supporting arms are used for supporting the annular sleeve. A window allowing the movable clamp arm in an open state to extend out is reserved between the two support arms, each movable clamp arm comprises a clamp head at the far end and a deformation section at the near end, the conveying assembly comprises two inhaul cables, the inhaul cables correspond to the movable clamp arms one to one, and the far end of each inhaul cable is connected with the deformation section of the corresponding movable clamp arm; according to the hemostatic forceps, the inhaul cable is directly connected with the movable forceps arm, opening and closing of the forceps head are achieved under driving of the inhaul cable, the movable forceps arm in the closed state is locked through matching of the deformation section and the annular sleeve, the clamping force of the forceps head is improved, and the hemostatic forceps are few in part, low in cost, simple in structure and easy to manufacture and operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a hemostatic forceps. Background Art

[0002] In recent years, minimally invasive surgery has developed rapidly, the lesion detection rate has become higher and higher, and tissue bleeding has increased. The technology of treatment through rigid laparoscope or flexible endoscope has become more and more popular. Laparoscopy or endoscopy is widely popular because of its small trauma and fast recovery of patients after surgery.

[0003] Hemostatic forceps have become the most effective and clinically valuable method for non-surgical treatment of acute bleeding in critically ill patients due to their low trauma, fast hemostasis, low incidence of rebleeding, few complications, and definite efficacy. Endoscopic metal clip hemostasis is one of the more widely used hemostatic methods. Skilled metal clip operation for appropriate cases can effectively stop bleeding and prevent rebleeding, reduce adverse reactions, and greatly improve the safety and cure rate of endoscopic treatment. The hemostatic mechanism of the utility model hemostatic forceps is the same as surgical vascular ligation or suturing. It is a physical mechanical method that uses the mechanical force generated when the hemostatic forceps is closed to close the surrounding tissues and bleeding blood vessels, thereby compressing the blood vessels to block the blood flow to achieve the purpose of hemostasis.

[0004] However, the reliance on the camera and channel of the mirror itself makes it more difficult for doctors to operate. In particular, if the bleeding during the operation is not stopped in time, the surgical field of view will be lost. Once the bleeding point cannot be found in a short time and the bleeding cannot be stopped in time, the patient will have to face clinical surgery and expand the operation to stop the bleeding. Therefore, endoscopic hemostasis is a particularly critical part of the operation. The existing hemostatic devices on the market are usually expensive, complex in structure, and inconvenient to operate. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in order to solve the problems that the hemostatic forceps in the prior art are expensive, complex in structure and inconvenient to operate, a hemostatic forceps is provided.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solution: a hemostatic forceps, comprising a hemostatic forceps body and a conveying assembly for conveying the hemostatic forceps body, the two being detachably connected.

[0007] The hemostatic forceps body comprises a clamp seat and two movable forceps arms that can be opened or closed, the clamp seat comprises an annular sleeve and two oppositely arranged supporting arms, the annular sleeve is located at the proximal end of the clamp seat and is used to lock the movable forceps arm in a closed state, the supporting arms are located at the distal end of the clamp seat, a window is left between the two supporting arms for the movable forceps arm in an open state to extend out, and the movable forceps arm comprises a distal clamp head and a proximal deformation section;

[0008] The conveying assembly includes two cables, which correspond to the two movable clamp arms one by one, and the distal end of each cable is connected to the deformation section of the corresponding movable clamp arm, so as to drive the movable clamp arm to open or close.

[0009] When the cable moves toward the distal end, the pliers head gradually opens, and when the cable moves toward the proximal end, the deformation section gradually deforms so that the proximal end of the movable pliers arm is received in the annular sleeve, and the annular sleeve locks it.

[0010] In the above technical solution, the cable is directly connected to the movable forceps arm, and the opening and closing of the forceps head are achieved under the drive of the cable. The movable forceps arm in the closed state is locked by cooperating with the deformation section and the annular sleeve to improve the clamping force of the forceps head. The hemostatic forceps has few parts and low cost, and has a simple structure, is easy to manufacture and easy to operate.

[0011] Furthermore, the clamp seat extends to the distal end to form a fixed clamp arm, and two movable clamp arms are distributed on both sides of the fixed clamp arm, and the two movable clamp arms can be brought close to each other to achieve closing with the fixed clamp arm. When the wound surface is large, one of the movable clamp arms can cooperate with the fixed clamp arm to clamp one side of the wound surface and then pull it toward the other side, and the other movable clamp arm can cooperate with the fixed clamp arm to clamp the other side of the wound surface, thereby achieving clamping of the wound surface.

[0012] Furthermore, the deformation section is provided with a snap-in portion for abutting against the inner wall of the annular sleeve to lock the movable pliers arm in a closed state. When the cable moves toward the proximal end, the deformation section extends and enters the annular sleeve under the action of the axial tension of the cable, and then the snap-in portion abuts against the inner wall of the annular sleeve to make the movable pliers arm lose its rotational freedom, thereby locking the movable pliers arm.

[0013] Furthermore, the distal ends of the two cables gradually approach each other and then gradually move away from each other, forming a cross shape, and a component force is generated at an angle with the axial direction to drive the movable clamp arm to open and close.

[0014] Furthermore, the fixed forceps arm is provided with a plurality of sharp cones along its axial direction, so as to enter into the tissue sideways and grasp the tissue firmly.

[0015] Furthermore, the conveying assembly also includes a handle and a sliding mechanism slidably connected to the handle, the proximal end of the cable is connected to the sliding mechanism and the two cables correspond to the two sliding mechanisms one by one, each sliding mechanism is used to drive the corresponding cable to move forward and backward, and a protective cover is provided on the portion of the cable close to the sliding mechanism to ensure that the proximal end of the cable is not bent under force, and a sleeve is provided on the cable, which is a metal tube or a multi-layer composite tube, and has the flexibility to be bent through an endoscope and the rigidity to directly reach the lesion site without passing through an endoscope.

[0016] Furthermore, the deformation section is also provided with a limiting portion for limiting the deformation degree of the snap-in portion to prevent it from being excessively deformed and broken, and a gap is formed between the limiting portion and the snap-in portion.

[0017] Furthermore, the deformation section is formed by bending the proximal end of the pliers head, and the thickness of the deformation section is less than the thickness of the pliers head. The deformation section formed by the bending is easy to deform to achieve the opening of the pliers head, and the reduced thickness further improves its deformation ability, making the operation more labor-saving.

[0018] Furthermore, a convex shaft protrudes from the proximal end of the deformation section, and the distal end of the cable is bent to form a buckle sleeved on the convex shaft, and the convex shaft and the buckle cooperate to achieve the connection between the cable and the clamp arm.

[0019] Furthermore, two groups of outer pin holes are provided on the support arm, and the two groups of outer pin holes, the inner pin holes on the two movable caliper arms and the two pin shafts correspond to each other one by one, and each pin shaft is inserted into the corresponding outer pin hole and inner pin hole.

[0020] The beneficial effects of the utility model are as follows: in the utility model, the pull cable is directly connected to the movable forceps arm, and the opening and closing of the forceps head are realized under the drive of the pull cable, and the movable forceps arm in the closed state is locked by cooperating with the deformation section and the annular sleeve to improve the clamping force of the forceps head. The hemostatic forceps has few parts and low cost, and has a simple structure, is easy to manufacture and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 is a schematic structural diagram of the first embodiment in a closed state;

[0024] Figure 3 is a schematic diagram of the structure of the first embodiment in an open state;

[0025] Figure 4 is a cross-sectional view of the first embodiment;

[0026] Figure 5 is a schematic diagram of the structure of the second embodiment in a closed state;

[0027] Figure 6 is a schematic diagram of the structure of the second embodiment in an open state;

[0028] Figure 7 is a cross-sectional view of the second embodiment;

[0029] Figure 8 It is a split diagram of the second embodiment;

[0030] Fig. 9 is a schematic structural diagram of the movable clamp arm in the second embodiment from a first viewing angle;

[0031] Fig.10 is a structural schematic diagram of the movable clamp arm in the second embodiment from a second viewing angle;

[0032] Fig.11 is a schematic diagram of the structure of the third embodiment in a closed state;

[0033] Fig.12 is a schematic diagram of the structure of the third embodiment in an open state;

[0034] Fig.13 It is a split diagram of the third embodiment;

[0035] In the figure:

[0036] 1. Hemostatic forceps body; 11. Forceps seat; 111. Annular sleeve; 112. Support arm; 1121. External pin hole; 113. Window; 114. Notch; 115. Limit block; 116. Partition plate; 117. Protrusion; 12. Moving forceps arm; 121. Forceps head; 122. Deformation section; 123. Insertion part; 124. Protruding shaft; 125. Limiting part; 13. Fixed forceps arm; 131. Cone; 14. Pin shaft;

[0037] 2. Conveying assembly; 21. Cable; 22. Buckle; 23. Sleeve; 24. Handle; 25. Sliding mechanism; 26. Protective cover. DETAILED DESCRIPTION

[0038] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0039] Embodiment 1:

[0040] like Figure 1-Figure 4 As shown, the utility model is a hemostatic forceps, comprising a hemostatic forceps body 1 and a conveying assembly 2 for conveying the hemostatic forceps body 1, and the two are detachably connected.

[0041] The hemostatic forceps body 1 includes a clamp seat 11 and two movable forceps arms 12 that can be opened or closed. When the two are closed, they can clamp the wound surface. The clamp seat 11 includes an annular sleeve 111 and two oppositely arranged support arms 112. The annular sleeve 111 is located at the proximal end of the clamp seat 11, which can accommodate two movable forceps arms 12 and lock the movable forceps arms 12 in a closed state. The support arms 112 are located at the distal end of the clamp seat 11, and a window 113 is reserved between the two support arms 112 for the movable forceps arms 12 in an open state to extend out. A group of outer pin holes 1121 are opened on the support arms 112, and an inner pin hole is opened in the middle of the movable forceps arm 12. A pin shaft 14 passes through the outer pin hole 1121 and the inner pin hole to realize the rotational connection between the two.

[0042] The movable pliers arm 12 includes a pliers head 121 at the distal end and a deformation section 122 at the proximal end. The deformation section 122 is formed by bending the proximal end of the pliers head 121, and the thickness of the deformation section 122 is less than that of the pliers head 121. The bending deformation section 122 is easy to deform to achieve locking of the pliers head 121, and the reduced thickness further improves its deformation ability, making the operation more labor-saving.

[0043] The conveying assembly 2 includes a handle 24, a sliding mechanism 25 slidably connected to the handle 24, and a cable 21 connected to the sliding mechanism 25 at the proximal end. The cable 21 is provided with a protective cover 26 at the part close to the sliding mechanism 25 to ensure that the proximal end of the cable 21 is not bent when subjected to force. There are two cables 21, and the two cables 21 correspond to the two movable clamp arms 12 one by one, and the distal end of each cable 21 is connected to the corresponding movable clamp arm 12. The two movable clamp arms 12 rotate around the pin 14 under the drive of the cables 21 to open and close; the proximal end of the deformation section 122 protrudes with a convex shaft 124, and the distal end of the cable 21 is bent to form a ring buckle 22 sleeved on the convex shaft 124. The convex shaft 124 cooperates with the ring buckle 22 to realize the connection between the cable 21 and the movable clamp arm 12. When the ring buckle 22 is deformed by force and separated from the convex shaft 124, the conveying assembly 2 and the hemostatic forceps body 1 can be separated. The distal ends of the two cables 21 gradually approach each other and then gradually move away from each other, forming a cross shape, and generating a component force at an angle with the axial direction to drive the movable clamp arm 12 to open and close.

[0044] The pull cable 21 is sleeved with a sleeve 23 , which is a metal tube or a multi-layer composite tube, and has flexibility that allows it to be bent by an endoscope and rigidity that allows it to directly reach the lesion site without an endoscope.

[0045] The deformation section 122 is provided with a snap-in portion 123 for abutting against the inner wall of the annular sleeve 111 to lock the movable pliers arm 12 in a closed state, and the deformation section 122 is provided with a limit portion 125 for limiting the deformation degree of the snap-in portion 123 to prevent it from being excessively deformed and broken, and a gap is formed between the limit portion 125 and the snap-in portion 123. When the cable 21 moves toward the proximal end, the deformation section 122 extends and enters the annular sleeve 111 under the axial tension of the cable 21, and then the snap-in portion 123 abuts against the inner wall of the annular sleeve 111 to make the movable pliers arm 12 lose the degree of rotational freedom, thereby locking the movable pliers arm; another embodiment can be: the annular sleeve 111 is provided with a notch 114 for avoidance at the position corresponding to the window 113, and protrusions 117 are formed on both sides of the notch 114, and the inner wall of the protrusion 117 is used to abut against the snap-in portion 123.

[0046] A limit block 115 protrudes from each support arm 112, and the two limit blocks 115 correspond to the two movable clamp arms 12 one by one, and each limit block 115 is used to block the corresponding movable clamp arm 12 from opening in one direction, that is, the two limit blocks 115 are located on both sides of the two movable clamp arms 12, one of the limit blocks 115 allows the corresponding movable clamp arm 12 to rotate in the first direction and blocks it from rotating in the second direction, and the other limit block 115 allows the corresponding movable clamp arm 12 to rotate in the second direction and blocks it from rotating in the first direction, and the first direction and the second direction are opposite.

[0047] Embodiment 2:

[0048] like Figure 5-Figure 10 As shown, the difference between the second embodiment and the first embodiment is that: the clamp seat 11 extends to the distal end to form a fixed clamp arm 13, two movable clamp arms 12 are distributed on both sides of the fixed clamp arm 13, and the two movable clamp arms 12 are close to each other to achieve closure with the fixed clamp arm 13, two cables 21 correspond to two sliding mechanisms 25 one by one, and each sliding mechanism 25 is used to drive the corresponding cable 21 to move forward and backward. When the wound surface is large, one of the sliding mechanisms 25 drives the corresponding movable clamp arm 12 to cooperate with the fixed clamp arm 13 to clamp one side of the wound surface 5 and pull it to the other side, and the other sliding mechanism 25 can drive the corresponding movable clamp arm 12 to cooperate with the fixed clamp arm to clamp the other side of the wound surface, thereby achieving the clamping of the large wound surface. Compared with the two movable clamp arms 12 of the first embodiment, the size of the wound surface is limited by the opening amplitude of the movable clamp arm 12. The fixed clamp arm 13 is provided with a plurality of sharp cones 131 along its axial direction, which can enter the tissue sideways and grasp the tissue.

[0049] Embodiment three:

[0050] like Figure 11-13 As shown, the difference between Example 3 and Example 2 is that: two groups of outer pin holes 1121 are opened on the support arm 112, and the two groups of outer pin holes 1121, the inner pin holes on the two movable pliers arms 12 and the two pin shafts 14 correspond to each other one by one, and each pin shaft 14 is inserted into the corresponding outer pin hole 1121 and the inner pin hole, and the fixed pliers arm 13 extends toward the direction of the annular sleeve 111 with a partition 116, and the partition 116 is located between the two support arms 112, and the partition 116 is provided with a through hole for the pin shaft 14 to pass through.

[0051] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A hemostatic forceps, characterized in that: It comprises a hemostatic forceps body (1) and a conveying assembly (2) for conveying the hemostatic forceps body (1); The hemostatic forceps body (1) comprises a forceps seat (11) and two movable forceps arms (12) that can be opened or closed. The forceps seat (11) comprises an annular sleeve (111) and two oppositely arranged supporting arms (112). The annular sleeve (111) is used to lock the movable forceps arm (12) in a closed state. A window (113) is reserved between the two supporting arms (112) for the movable forceps arm (12) in an open state to extend out. The movable forceps arm (12) comprises a forceps head (121) located at a distal end and a deformation section (122) located at a proximal end. The conveying assembly (2) comprises two cables (21), the two cables (21) correspond to the two movable clamp arms (12) one by one, and the distal end of each cable (21) is connected to the deformation section (122) of the corresponding movable clamp arm (12); When the cable (21) moves toward the distal end, the pliers head (121) gradually opens; when the cable (21) moves toward the proximal end, the deformation section (122) gradually deforms so that the proximal end of the movable pliers arm (12) is received in the annular sleeve (111) for locking.

2. A hemostatic forceps according to claim 1, characterized in that: The clamp seat (11) extends to the far end to form a fixed clamp arm (13), and two movable clamp arms (12) are distributed on both sides of the fixed clamp arm (13). The two movable clamp arms (12) can be closed with the fixed clamp arm (13) by approaching each other.

3. A hemostatic forceps according to claim 1, characterized in that: The deformation section (122) is provided with a snap-in portion (123) for abutting against the inner wall of the annular sleeve (111) to lock the movable pliers arm (12) in a closed state.

4. A hemostatic forceps according to claim 1, characterized in that: The distal ends of the two cables (21) gradually approach each other and then gradually move away from each other to form a cross shape.

5. A hemostatic forceps according to claim 2, characterized in that: The fixed clamp arm (13) is provided with a plurality of pointed cones (131) along its axial direction.

6. A hemostatic forceps according to claim 1, characterized in that: The conveying assembly (2) further comprises a handle (24) and a sliding mechanism (25) slidably connected to the handle (24); the proximal end of the pull cable (21) is connected to the sliding mechanism (25), and the two pull cables (21) correspond to the two sliding mechanisms (25) in a one-to-one manner.

7. A hemostatic forceps according to claim 3, characterized in that: The deformation section (122) is also provided with a limiting portion (125) for limiting the degree of deformation of the snap-in portion (123).

8. The hemostatic forceps according to claim 1, characterized in that: The deformation section (122) is formed by bending the proximal end of the clamp head (121), and the thickness of the deformation section (122) is smaller than the thickness of the clamp head (121).

9. The hemostatic forceps according to claim 1, characterized in that: A convex shaft (124) protrudes from the proximal end of the deformation section (122), and the distal end of the pull cable (21) is bent to form a buckle (22) sleeved on the convex shaft (124).

10. The hemostatic forceps according to claim 1, characterized in that: The support arm (112) is provided with two groups of outer pin holes (1121), and the two groups of outer pin holes (1121), the inner pin holes on the two movable pliers arms (12) and the two pin shafts (14) correspond to each other one by one, and each pin shaft (14) is inserted into the corresponding outer pin hole (1121) and the inner pin hole.

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