CN215384226U

CN215384226U - Handle type biopsy forceps capable of stably clamping

Info

Publication number: CN215384226U
Application number: CN202022995343.XU
Authority: CN
Inventors: 孙鹏; 李研彪; 杨奎; 毛豪裕; 叶家铭; 高玉君
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2022-01-04
Anticipated expiration: 2030-12-14

Abstract

The utility model discloses a handle type stably-clamped biopsy forceps, which comprises a handle assembly, a transmission assembly, a forceps head assembly and a traction steel wire, wherein the handle assembly comprises a ring, a cylindrical guide rail, an upper handle, a lower handle, a sliding ring, an outer gear shaft and an inner gear shaft; the opening and closing movement and the swinging of the pliers can be controlled by controlling the movement of the handle, and the inner gear and the outer gear can be completely meshed by controlling the rotation of the pull ring so as to control the rotary movement of the pliers.

Description

Handle type biopsy forceps capable of stably clamping

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a handle type biopsy forceps capable of stably clamping.

Background

Currently, endoscopy is widely used in clinic as an auxiliary diagnosis method, and a sampling forceps enters a patient body through an endoscopic forceps channel to clamp a lesion tissue, and then the clamped tissue is subjected to pathological analysis to confirm a disease condition. In general clinical operation, with the aid of an endoscope, a sampling forceps enters a human body through a forceps channel of the endoscope, a forceps head is aligned to a focus, a handle slider is pushed, a forceps opening can be opened, then a sampled tissue is approached, the handle slider is pulled, the forceps opening can be closed at the moment, an outer tube is pulled backwards, and the sampling forceps are taken out; in addition, the sampling forceps can also clamp other medical equipment to enter and exit the human body when in normal use. The motion control structure principle of the chuck is simple, namely the chuck in front is controlled to be opened and closed by a central steel wire pulling connecting rod structure.

However, the pathological tissue is not easy to observe when the tissue is clamped by the traditional biopsy forceps, and the pathological tissue can be clamped only by adjusting the sampling forceps to a proper angle. After the traditional body sampling forceps are inserted into a body pipeline, the angle for clamping is not easy to adjust, the operation is inconvenient, and discomfort of patients and medical staff is easily caused. In addition, the operating handle part of the sampling forceps is small, so that the medical staff is inconvenient to hold.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that pathological tissues are not easy to observe and the temperature of an angle is not easy to adjust when the traditional biopsy forceps are used, and provides a handle type biopsy forceps capable of being stably clamped.

The utility model realizes the purpose through the following technical scheme: a handle type stably-clamped biopsy forceps, which comprises a handle component, a transmission component, a forceps head component and a traction steel wire,

the handle assembly comprises a ring, a cylindrical guide rail, an upper handle, a lower handle, a sliding ring, an outer gear shaft and an inner gear shaft, wherein the ring is in a ring shape, one end of the cylindrical guide rail is provided with a through hole, the ring is fixedly connected with the inner gear shaft, and the inner gear shaft penetrates through the through hole formed in the cylindrical guide rail and is arranged inside the cylindrical guide rail; the sliding ring is sleeved on the cylindrical guide rail and can linearly move along the cylindrical guide rail and rotate around the cylindrical guide rail, the upper handle is fixed at one end of the cylindrical guide rail close to the ring, and the lower handle is fixed on the sliding ring; the outer gear shaft is fixed on the sliding ring, a through hole penetrating through the sliding ring is formed in the sliding ring, one end of a traction steel wire penetrates through the through hole in the sliding ring to be connected onto the outer gear shaft, an outer gear is arranged on the outer gear shaft, an inner gear is arranged on the inner gear shaft, the outer gear on the outer gear shaft is meshed with the inner gear on the inner gear shaft, and the sliding ring drives the outer gear shaft to be close to or far away from the inner gear shaft when moving linearly on the cylindrical guide rail so as to realize meshing and separation of the outer gear shaft and the inner gear shaft;

the transmission assembly comprises a spring tube, a primary plane swing rod mechanism, a push rod and a fixed rod, one end of the spring tube is fixedly connected to one end of the cylindrical guide rail of the handle assembly, the other end of the spring tube is fixedly connected to the driving end of the primary plane swing rod mechanism, and the opening and closing movement of the clamp clacks is finally achieved through the deformation of the spring tube and the transmission relation of the primary plane swing rod mechanism.

The primary plane swing rod mechanism comprises a first driving rod, a second driving rod, a third driving rod, a fourth driving rod, a fifth driving rod and a swing rod, one end of the first driving rod is connected with the spring pipe, one end of the second driving rod is hinged with one end of the third driving rod, the other end of the second driving rod is hinged with one end of the fourth driving rod, the other end of the third driving rod is hinged with one end of the fifth driving rod, and the middle parts of the fourth driving rod and the fifth driving rod are hinged with the other end of the first driving rod; the traction steel wire is connected with the hinged ends of the second driving rod and the third driving rod; one end of the swinging rod is hinged to one end of the fifth driving rod, the other end of the swinging rod is hinged to the push rod, the push rod is sleeved in the fixed pipe, one end of the fixed pipe and the fourth driving rod are arranged, and the swinging rod drives the whole body formed by the other end of the swinging rod and the push rod to linearly move in the fixed pipe when driven by the fifth driving rod to move;

furthermore, the push rod is a cylinder, one end of the push rod is connected with the swing rod of the primary plane swing rod mechanism, and the other end of the push rod is connected with the tong head assembly.

Furthermore, the whole fixed rod is a hollow cylinder, one end of the fixed rod is hinged with the oscillating rod of the primary plane oscillating rod mechanism through a hinge hole, a push rod is installed in the middle of the fixed rod and is in clearance fit with the fixed rod, and the push rod can move in the fixed rod in a reciprocating mode.

Furthermore, the tong head assembly comprises a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, a first tong flap and a second tong flap, the second connecting rod is fixedly connected with the fixed rod, a through hole is formed in the middle of the second connecting rod, one end of a push rod of the transmission assembly is fixedly connected with one end of the first connecting rod, the first connecting rod penetrates through the through hole in the middle of the second connecting rod, the other end of the first connecting rod is hinged to one ends of the fifth connecting rod and the sixth connecting rod, the other end of the fifth connecting rod is hinged to one end of the third connecting rod, the other end of the sixth connecting rod is hinged to one end of the fourth connecting rod, and the other ends of the third connecting rod and the fourth connecting rod are hinged to two ends of the second connecting rod respectively; the first clamp flap is fixed on the third connecting rod, the second clamp flap is fixed on the fourth connecting rod, the first connecting rod moves back and forth along a through hole in the middle of the second connecting rod under the driving of a push rod of the transmission assembly, and the hinge ends of the fifth connecting rod, the sixth connecting rod and the first connecting rod are driven to move back and forth, so that the third connecting rod and the fourth connecting rod are driven to swing, and the first clamp flap and the second clamp flap are driven to open and close.

The utility model has the beneficial effects that:

1. the utility model can realize the rotation and the swing of the forceps head of the biopsy forceps, and can be conveniently held by medical care personnel due to the installation of the handle.

2. The utility model can control the opening and closing movement and the swing of the pliers by controlling the movement of the handle, and can completely mesh the inner gear and the outer gear by controlling the rotation of the pull ring so as to control the rotation movement of the pliers.

3. Medical personnel when using, hold handle control swing and open and shut on the other hand, rotatory pull ring control on the other hand rotates, and such operation can not only let the operation become more convenient, also can let biopsy forceps's pliers become more nimble, accurate.

4. The utility model has simple structure and convenient operation, can greatly reduce the operation time of medical personnel and the examination time of patients, and is suitable for clinical popularization.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a handle-type steady clamping biopsy forceps.

Fig. 2 is a schematic view of the handle assembly of the present invention.

Fig. 3 is a schematic view of the transmission assembly of the present invention.

Fig. 4 is a schematic structural view of the binding clip assembly of the present invention.

In the drawing, 1-handle component, 11-ring, 12-guide rail, 13-upper handle, 14-lower handle, 15-slip ring, 16-outer gear shaft, 17-inner gear shaft, 2-transmission component, 21-spring tube, 22-primary plane swing rod mechanism, 221-second driving rod, 222-third driving rod, 223-swing rod, 224-hinge hole, 225-fourth driving rod, 226-first driving rod, 227-fifth driving rod, 23-fixed rod, 24-push rod, 3-tong head component, 31-first connecting rod, 32-second connecting rod, 33-first tong flap, 34-second tong flap, 35-third connecting rod, 36-fourth connecting rod, 37-fifth connecting rod, 38-sixth connecting rod, 4-traction steel wire.

Detailed Description

The utility model will be further explained with reference to the drawings. The specific embodiments described herein are merely illustrative of the utility model and do not limit the scope of the utility model.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "upper", "lower", "bottom", "middle", and the like are merely representative of the orientation of the terms in the conventional use state, and should not be construed as limiting the terms.

In the present invention, the terms "connected," "disposed," "provided," "secured," and the like are to be construed broadly unless otherwise explicitly specified or limited. For example, it may be a mechanical connection; may be a detachable connection; may be directly connected, etc., unless expressly specified otherwise. The meaning of the above terms in the present invention can be understood according to the specific circumstances to those skilled in the art.

As shown in figures 1-4, a handle type stable clamping biopsy forceps comprises a handle assembly 1, a transmission assembly, a forceps head assembly 3 and a traction steel wire 4,

the handle assembly 1 comprises a ring 11, a cylindrical guide rail 12, an upper handle 13, a lower handle, a sliding ring, an outer gear shaft and an inner gear shaft, wherein the ring 11 is in a ring shape, one end of the cylindrical guide rail 12 is provided with a through hole, the ring 11 is fixedly connected with the inner gear shaft, and the inner gear shaft penetrates through the through hole formed in the cylindrical guide rail 12 and is arranged inside the cylindrical guide rail 12; the sliding ring is sleeved on the cylindrical guide rail 12 and can linearly move along the cylindrical guide rail 12 and rotate around the cylindrical guide rail 12, the upper handle 13 is fixed at one end of the cylindrical guide rail 12 close to the ring 11, and the lower handle is fixed on the sliding ring; the outer gear shaft is fixed on the sliding ring, a through hole penetrating through the sliding ring is formed in the sliding ring, one end of each traction steel wire 4 penetrates through the through hole in the sliding ring to be connected to the outer gear shaft, an outer gear is arranged on the outer gear shaft, an inner gear is arranged on the inner gear shaft, the outer gear on the outer gear shaft is meshed with the inner gear on the inner gear shaft, and the sliding ring drives the outer gear shaft to be close to or far away from the inner gear shaft when moving linearly on the cylindrical guide rail 12, so that the outer gear shaft and the inner gear shaft are meshed and separated;

the transmission assembly comprises a spring tube, a primary plane swing rod mechanism 22, a push rod 24 and a fixing rod 23, one end of the spring tube is fixedly connected to one end of the cylindrical guide rail 12 of the handle assembly 1, the other end of the spring tube is fixedly connected to the driving end of the primary plane swing rod mechanism 22, and the opening and closing movement of the clamp clack is finally achieved through the deformation of the spring tube and the transmission relation of other plane mechanisms.

The primary plane swing link mechanism 22 comprises a first driving rod 226, a second driving rod 221, a third driving rod 222, a fourth driving rod 225, a fifth driving rod and a swing link 223, one end of the first driving rod 226 is connected with a spring tube, one ends of the second driving rod 221 and the third driving rod 222 are hinged, the other end of the second driving rod 221 is hinged with one end of the fourth driving rod 225, the other end of the third driving rod 222 is hinged with one end of the fifth driving rod, and the middles of the fourth driving rod 225 and the fifth driving rod are hinged with the other end of the first driving rod 226; the traction wire 4 is connected with the hinged ends of the second driving rod 221 and the third driving rod 222; one end of the swing rod 223 is hinged to one end of the fifth driving rod, the other end of the swing rod 223 is hinged to the push rod 24, the push rod 24 is sleeved in the fixed pipe, one end of the fixed pipe and the fourth driving rod 225 are arranged, and the swing rod 223 drives the whole body formed by the other end of the swing rod 223 and the push rod 24 to move linearly in the fixed pipe when driven by the fifth driving rod;

the push rod 24 is a cylinder, one end of the push rod is connected with the swing rod 223 of the primary plane swing rod mechanism 22, and the other end of the push rod is connected with the binding clip assembly 3.

The whole fixed rod 23 is a hollow cylinder, one end of the fixed rod is hinged with the swing rod 223 of the primary plane swing rod mechanism 22 through a hinge hole 224, the push rod 24 is installed in the middle of the fixed rod 23 and is in clearance fit with the fixed rod 23, and the push rod 24 can move in the fixed rod 23 in a reciprocating mode.

The forceps head assembly 3 comprises a first connecting rod 31, a second connecting rod 32, a third connecting rod 35, a fourth connecting rod 36, a fifth connecting rod 37, a sixth connecting rod 38, a first forceps flap 33 and a second forceps flap 34, the second connecting rod 32 is fixedly connected with the fixing rod 23, a through hole is formed in the middle of the second connecting rod 32, one end of a push rod 24 of the transmission assembly is fixedly connected with one end of the first connecting rod 31, the first connecting rod 31 penetrates through the through hole in the middle of the second connecting rod 32, the other end of the first connecting rod 31 is hinged to one end of the fifth connecting rod 37 and one end of the sixth connecting rod 38, the other end of the fifth connecting rod 37 is hinged to one end of the third connecting rod 35, the other end of the sixth connecting rod 38 is hinged to one end of the fourth connecting rod 36, and the other ends of the third connecting rod 35 and the fourth connecting rod 36 are hinged to two ends of the second connecting rod 32 respectively; the first clamp flap 33 is fixed on the third connecting rod 35, the second clamp flap 34 is fixed on the fourth connecting rod 36, the first connecting rod 31 is driven by the push rod 24 of the transmission assembly to move back and forth along the through hole in the middle of the second connecting rod 32, and the hinge ends of the fifth connecting rod 37, the sixth connecting rod 38 and the first connecting rod 31 are driven to move back and forth, so that the third connecting rod 35 and the fourth connecting rod 36 are driven to swing, and the first clamp flap 33 and the second clamp flap 34 are driven to open and close.

Detailed description of the embodiments:

the binding clip rotates: medical personnel are through lower handle 14 on the rotatory removal handle assembly 1, with the rotatory rising of outer gear shaft 16 reach can with the meshing of internal gear axle 17, then rotatory lower handle 14 passes through gear mechanism and can drive the rotation of traction wire 4, because traction wire 4 connects on drive assembly 2, drive assembly 2 can regard as a whole, under the effect of rotating force, drive assembly 2 can realize rotatoryly, and binding clip subassembly 3 can regard as a whole, its drive division is connected with drive assembly's push rod 24, the revolving force passes through drive assembly 2 and transmits push rod 24, final push rod 24 transmits whole binding clip subassembly 3 in will rotating, can realize binding clip subassembly 3's rotation.

When the medical staff aligns and completely meshes the inner gear shaft and the outer gear shaft, the outer gear shaft 16 of the handle assembly 1 can move in the inner gear shaft 17 by moving the lower handle 14 on the handle assembly 1 up and down to drive the traction steel wire 4 fixedly connected with the bottom of the outer gear shaft 16, so that the traction steel wire 4 has stretching action, the traction steel wire 4 passes through the spring tube 21 in the transmission assembly and is connected to the first driving rod 226 of the primary plane swing rod mechanism 22, when the traction steel wire 4 stretches, the driving end of the primary plane swing rod mechanism 22 is driven, because one end of the spring tube 21 is fixedly connected with the bottom end of the handle assembly 1, and the other end is fixedly connected with the driving end of the primary plane swing rod mechanism 22, when the traction steel wire 4 stretches, the spring tube 21 is driven to shrink, so that the whole mechanism generates resilience, because the primary plane swing rod mechanism 22 comprises the first driving rod 226, A second driving rod 221, a third driving rod 222, a fourth driving rod 225, a fifth driving rod and a swing rod 223, wherein one end of the first driving rod 226 is connected with the traction steel wire 4, the other end is hinged with other rod members, the swing rod 223 is driven to swing through the hinging motion between the rod members, the other end of the swing rod 223 is hinged on the push rod 24, the push rod 24 is sleeved in the fixed tube 23, one end of the fixed tube 23 is fixedly connected with the forceps head assembly 3, so that the movement of the forceps head assembly 3 driven by the push rod 24 is realized, the forceps head assembly 3 is composed of a first connecting rod 31, a second connecting rod 32, a third connecting rod 35, a fourth connecting rod 36, a fifth connecting rod 37, a sixth connecting rod 38, a first forceps flap 33 and a second forceps flap 34, one end of the push rod 24 of the transmission assembly is fixedly connected with one end of the first connecting rod 31, the first connecting rod 31 passes through a through hole in the middle of the second connecting rod 32, and the other end of the first connecting rod 31 is hinged with one end of the fifth connecting rod 37 and one end of the sixth connecting rod 38, the other end of the fifth connecting rod 37 is hinged to one end of the third connecting rod 35, the other end of the sixth connecting rod 38 is hinged to one end of the fourth connecting rod 36, and the other ends of the third connecting rod 35 and the fourth connecting rod 36 are respectively hinged to two ends of the second connecting rod 32; the first jaw 33 is fixed on the third connecting rod 35, the second jaw 34 is fixed on the fourth connecting rod 36, the first connecting rod 31 is driven by the push rod 24 of the transmission assembly to move back and forth along the through hole in the middle of the second connecting rod 32, and the hinge ends of the fifth connecting rod 37 and the sixth connecting rod 38 and the first connecting rod 31 are driven to move back and forth, so that the third connecting rod 35 and the fourth connecting rod 36 are driven to swing, and the first jaw 33 and the second jaw 34 can also be driven to open and close.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.

Claims

1. The utility model provides a grip formula stabilizes biopsy forceps of centre gripping which characterized in that: comprises a handle component (1), a transmission component, a tong head component (3) and a traction steel wire (4),

the handle assembly (1) comprises a ring (11), a cylindrical guide rail (12), an upper handle (13), a lower handle, a sliding ring, an outer gear shaft and an inner gear shaft, wherein the ring (11) is in a ring shape, one end of the cylindrical guide rail (12) is provided with a through hole, the ring (11) is fixedly connected with the inner gear shaft, and the inner gear shaft penetrates through the through hole formed in the cylindrical guide rail (12) and is arranged inside the cylindrical guide rail (12); the slip ring is sleeved on the cylindrical guide rail (12) and can linearly move along the cylindrical guide rail (12) and rotate around the cylindrical guide rail (12), the upper handle (13) is fixed at one end of the cylindrical guide rail (12) close to the ring (11), and the lower handle is fixed on the slip ring; the outer gear shaft is fixed on the sliding ring, a through hole penetrating through the sliding ring is formed in the sliding ring, one end of a traction steel wire (4) penetrates through the through hole in the sliding ring to be connected onto the outer gear shaft, an outer gear is arranged on the outer gear shaft, an inner gear is arranged on the inner gear shaft, the outer gear on the outer gear shaft is meshed with the inner gear on the inner gear shaft, and the sliding ring drives the outer gear shaft to be close to or far away from the inner gear shaft when moving linearly on the cylindrical guide rail (12), so that the outer gear shaft and the inner gear shaft are meshed and separated;

the transmission assembly comprises a spring tube, a primary plane swing rod mechanism (22), a push rod (24) and a fixed rod (23), one end of the spring tube is fixedly connected to one end of a cylindrical guide rail (12) of the handle assembly (1), the other end of the spring tube is fixedly connected to the driving end of the primary plane swing rod mechanism (22), and the opening and closing movement of the clamp petals is finally achieved through the deformation of the spring tube and the transmission relation of the primary plane swing rod mechanism (22);

the primary plane swing rod mechanism (22) comprises a first driving rod (226), a second driving rod (221), a third driving rod (222), a fourth driving rod (225), a fifth driving rod (227) and a swing rod (223), one end of the first driving rod (226) is connected with a spring tube, one ends of the second driving rod (221) and the third driving rod (222) are hinged, the other end of the second driving rod (221) is hinged with one end of the fourth driving rod (225), the other end of the third driving rod (222) is hinged with one end of the fifth driving rod (227), and the middle parts of the fourth driving rod (225) and the fifth driving rod (227) are hinged to the other end of the first driving rod (226); the traction steel wire (4) is connected with the hinged ends of the second driving rod (221) and the third driving rod (222); the one end of swinging arms (223) articulates the one end at fifth actuating lever (227), and the other end of swinging arms (223) articulates on push rod (24), push rod (24) suit is in the fixed tube, on the one end of fixed pipe and fourth actuating lever (225), and the whole that the other end that swinging arms (223) were driven during the motion under the drive of fifth actuating lever (227) and push rod (24) are constituteed is at the intraductal rectilinear motion of fixed tube in swinging arms (223).

2. The hand-held steady grip biopsy forceps of claim 1, further comprising: the push rod (24) is a cylinder, one end of the push rod is connected with a swing rod (223) of the primary plane swing rod mechanism (22), and the other end of the push rod is connected with the tong head assembly (3).

3. The hand-held steady grip biopsy forceps of claim 1, further comprising: the whole fixed rod (23) is a hollow cylinder, one end of the fixed rod is hinged with a swing rod (223) of the primary plane swing rod mechanism (22) through a hinge hole (224), a push rod (24) is installed in the middle of the fixed rod (23) and is in clearance fit with the fixed rod, and the push rod (24) can move in the fixed rod (23) in a reciprocating mode.

4. The hand-held steady grip biopsy forceps of claim 1, further comprising: the forceps head assembly (3) comprises a first connecting rod (31), a second connecting rod (32), a third connecting rod (35), a fourth connecting rod (36), a fifth connecting rod (37), a sixth connecting rod (38), a first forceps flap (33) and a second forceps flap (34), the second connecting rod (32) is fixedly connected with the fixing rod (23), a through hole is formed in the middle of the second connecting rod (32), one end of a push rod (24) of the transmission assembly is fixedly connected with one end of the first connecting rod (31), the first connecting rod (31) penetrates through the through hole in the middle of the second connecting rod (32), the other end of the first connecting rod (31) is hinged to one ends of the fifth connecting rod (37) and the sixth connecting rod (38), the other end of the fifth connecting rod (37) is hinged to one end of the third connecting rod (35), the other end of the sixth connecting rod (38) is hinged to one end of the fourth connecting rod (36), and the other ends of the third connecting rod (35) and the fourth connecting rod (36) are hinged to two ends of the second connecting rod (32) respectively (ii) a The first clamp flap (33) is fixed on the third connecting rod (35), the second clamp flap (34) is fixed on the fourth connecting rod (36), the first connecting rod (31) is driven by the push rod (24) of the transmission assembly to move back and forth along the through hole in the middle of the second connecting rod (32) to drive the hinged ends of the fifth connecting rod (37) and the sixth connecting rod (38) and the first connecting rod (31) to move back and forth, so that the third connecting rod (35) and the fourth connecting rod (36) are driven to swing, and the first clamp flap (33) and the second clamp flap (34) are driven to open and close.