CN210631249U - Transmission clamping part of biopsy forceps - Google Patents
Transmission clamping part of biopsy forceps Download PDFInfo
- Publication number
- CN210631249U CN210631249U CN201921018544.5U CN201921018544U CN210631249U CN 210631249 U CN210631249 U CN 210631249U CN 201921018544 U CN201921018544 U CN 201921018544U CN 210631249 U CN210631249 U CN 210631249U
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- push
- pull rod
- placing groove
- connecting hole
- hole
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Abstract
The utility model discloses a transmission clamping part of biopsy forceps, it includes the pipe box and from locking-type link assembly, the transmission clamping part of biopsy forceps obtains from the locking-structure through optimizing the structure, the direct relation between the motion stroke of push-and-pull rod and the jaw state change changes into indirect relation, promotes the push-and-pull rod and does the effect of one section amount of exercise in order to reach the unblock, the amount of exercise of push-and-pull rod after this just can be used for changing the closed state of jaw, obtain the interference of avoiding the maloperation from this.
Description
Technical Field
The utility model relates to a biopsy forceps especially relates to the transmission clamping part of the biopsy forceps who transmits power on the biopsy forceps.
Background
The biopsy forceps are indispensable tools for taking pathological specimens in endoscopy, and at least comprise forceps clamps, a connecting plate, a push-pull rod and a sleeve, wherein the push-pull rod is connected with the connecting plate, the connecting plate is connected with the forceps clamps, the push-pull rod and the connecting plate form a four-bar mechanism, and the forceps clamps can be opened and closed when the push-pull rod is pushed and pulled. The biopsy forceps are initially set up with a spring in the interior of the forceps in such a way that the push-pull rod acts in a pulling manner on the connecting plate, which brings the jaws into a closed state. That is, the jaws are in a closed state in the initial state of the bioptome. When sampling, medical staff holds the biopsy forceps by hands, the forceps jaws can be changed into an open state after the hands are operated forcibly, the forceps jaws can be automatically closed when the hands are loosened after the forceps jaws extend into the biological tissue for sampling, the biological tissue is located in the forceps jaws, and then the biological tissue sample is taken out of the body when the biopsy forceps are pulled out. The closed state of the jaws is always maintained by the elasticity of the spring on the biopsy forceps, and the closed state of the jaws can be changed as long as the external force is applied and the elasticity action trend of the spring is changed. The external force action refers to normal manual operation of the biopsy forceps and operation of the biopsy forceps under misoperation. It is conceivable that such bioptomes have the same response results whether they respond to normal manual or mismaneuvers. This also results in a faulty operation in which the jaws are opened again and the biological tissue sample falls into the body without being removed.
Disclosure of Invention
The to-be-solved technical problem of the utility model is how to get rid of the maloperation and do not respond to the maloperation when the biopsy forceps are used, obtain the transmission clamping part of a biopsy forceps from this.
In order to solve the technical problem, the utility model adopts the following technical scheme: the transmission clamping part of the biopsy forceps comprises a pipe sleeve and a self-locking connecting rod assembly, the self-locking connecting rod assembly comprises a push-pull rod, a connecting plate and two forceps jaws, two forceps jaws are movably mounted on the pipe sleeve, the forceps jaws are connected together in a hinged mode through a rotating shaft and movably mounted on the pipe sleeve, a round hole is formed in one end of each forceps jaw, the push-pull rod is movably mounted on the pipe sleeve in a sliding mode and linearly reciprocates on the pipe sleeve, two connecting holes used for being connected with the connecting plate are formed in one end of the push-pull rod, the cross section of each connecting hole is waist-shaped, two ends of the cross section of each connecting hole are semicircular, the middle of the cross section of each connecting hole is rectangular, the central line of the cross section of each connecting hole is parallel to the direction of the linear reciprocating motion of, the push-pull rod is connected with another forceps holder through another connecting plate, is criss-cross position relation between two connecting plates, be equipped with plate body, connecting axle I and connecting axle II on the connecting plate, connecting axle I and connecting axle II are all fixed in one side of plate body and the central line of connecting axle I is on a parallel with the central line of connecting axle II, the width of connecting hole equals the diameter of connecting axle I the length of connecting hole is greater than the diameter of connecting axle I, connecting axle I stretches into in the connecting hole and in the connecting hole motion, the diameter of round hole equals the diameter of connecting axle II, connecting axle II stretches into in the round hole.
The self-locking connecting rod component is characterized in that the movement stroke of the push-pull rod can not be directly used for changing the closing state of the jaws in the closing stage of the jaws, but the push-pull rod is required to be pushed for a certain movement amount to achieve the unlocking effect, and the movement amount of the push-pull rod can be used for changing the closing state of the jaws. Thus, the push-pull rod cannot drive the jaws to change state without having to do the amount of movement required for unlocking. When the driving clamping parts of the biopsy forceps are assembled into the biopsy forceps, a sufficient amount of operation must be applied to change the closing state of the jaws from the outside, and such an amount of operation is far more than that in the case of a faulty operation. Thereby solving the problem of eliminating the erroneous operation without responding to the erroneous operation.
The spatial attitude of the connecting plate in the self-locking stage should be fixed and not swing relative to the push-pull rod. In order to fully ensure that the space posture of the connecting plate is fixed in the self-locking stage, a structure for improving the connection degree of the connecting plate and the push-pull rod in the self-locking stage is arranged in the technical scheme. Specifically, one side of the push-pull rod is provided with an object placing groove, the other side of the push-pull rod is provided with an object placing groove, one object placing groove is communicated with one connecting hole, the other object placing groove is communicated with the other connecting hole, the object placing groove is integrally bent into a U shape, the depth of the object placing groove is smaller than that of the connecting hole, the object placing groove is positioned at the end, in the cross section of the connecting hole, of a semicircular shape, the opening end of the object placing groove is flush with the surface of the push-pull rod, the central line of the object placing groove is overlapped with the central line of the end, in the cross section of the connecting hole, of the semicircular shape, the diameter of the object placing groove is larger than that of the connecting hole, the diameter of the object placing groove is smaller than that of the connecting hole, one side of the connecting shaft I is provided with a limiting protrusion, the, the maximum distance from the limiting protrusion to the central line of the connecting shaft I is equal to the radius of the object placing groove, and the orientation of the limiting protrusion is intersected with the extending direction of the plate body. The limiting bulge is limited in the connecting hole after being separated from the object placing groove, so that the connecting plate and the push-pull rod are relatively fixed, the connecting plate cannot swing on the push-pull rod, and the closed state of the clamp is certainly fixed when the connecting plate cannot swing.
The utility model adopts the above technical scheme: the self-locking structure is obtained by optimizing the structure of the transmission clamping part of the biopsy forceps, the direct relation between the movement stroke of the push-pull rod and the state transition of the forceps jaws is changed into an indirect relation, the push-pull rod is pushed to do a certain movement amount to achieve the unlocking effect, and the movement amount of the push-pull rod after the movement amount can be used for changing the closing state of the forceps jaws, so that the interference of misoperation is avoided.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and embodiments.
FIG. 1 is a schematic view of a biopsy forceps with the jaws of the drive clamping member closed;
FIG. 2 is a schematic view of the biopsy forceps with the jaws of the driving and clamping member open;
FIG. 3 is a schematic structural view illustrating the transition of the jaws of the driving and clamping member of the biopsy forceps from the closed state to the open state;
FIG. 4 is a schematic view of the structure of the biopsy forceps of the present invention, wherein the jaws of the driving and clamping members are turned to an open state;
FIG. 5 is a schematic view of the driving and clamping member of a biopsy forceps according to the present invention being converted to an open state;
FIG. 6 is a schematic structural view I of a push-pull rod of a driving and clamping member of a biopsy forceps according to the present invention;
FIG. 7 is a schematic structural view II of a push-pull rod of a driving and clamping member of a biopsy forceps according to the present invention;
FIG. 8 is a schematic structural view I of a connecting plate of a driving clamping member of a biopsy forceps according to the present invention;
FIG. 9 is a schematic structural view II of a connecting plate of a driving and clamping member of a biopsy forceps according to the present invention;
FIG. 10 is a schematic view showing a change in state of a connecting shaft I of a driving and clamping member of a biopsy forceps in a connecting hole according to the present invention;
FIG. 11 is a schematic view II showing the change of the state of the connecting shaft I of the driving and clamping member of the biopsy forceps in the connecting hole;
fig. 12 is a schematic view showing the state change of the connecting shaft i of the driving and clamping member of the biopsy forceps in the connecting hole of the present invention.
Detailed Description
As shown in figures 1 and 2, the transmission clamping part of the biopsy forceps comprises a pipe sleeve 1 and a self-locking connecting rod component.
The pipe sleeve 1 is integrally of a tubular structure, a straight channel is arranged in the pipe sleeve 1 and is positioned on the central line of the pipe sleeve 1, one end of the pipe sleeve 1 extends outwards to form two symmetrically distributed connecting lugs, and the two connecting lugs are separated; each connecting lug is provided with a through hole, the through holes of the two connecting lugs are positioned on the same central line, and the central lines of the connecting lugs are perpendicular to the central line of the pipe sleeve 1.
As shown in fig. 3, 4, 5, 6, 7, the self-locking connecting rod assembly comprises a push-pull rod 2, a connecting plate 3, and a jaw 4. The two jaws 4 are connected together in a hinged manner by a rotating shaft inserted into the through holes of the connecting lugs of the pipe sleeve 1 and movably mounted on the pipe sleeve 1. One end of the forceps holder 4 is provided with a round hole.
One end of the push-pull rod 2 is of a flat structure, the other end of the push-pull rod 2 is of a cylindrical structure, the width of the flat structure of the push-pull rod 2 is larger than the diameter of the channel of the pipe sleeve 1, and during installation, the cylindrical structure of the push-pull rod 2 penetrates through the channel of the pipe sleeve 1 and the flat structure of the push-pull rod 2 is positioned between the two connecting lugs after installation; the push-pull rod 2 can freely slide in the pipe sleeve 1 to do linear reciprocating motion. Two connecting holes 5 which are symmetrically distributed are arranged at the flat structure of the push-pull rod 2, and the connecting holes 5 penetrate through the push-pull rod 2. The two ends of the cross section of the connecting hole 5 are semicircular, the middle of the cross section of the connecting hole is rectangular, the diameter of the semicircle is equal to the width of the rectangle, and therefore the cross section of the connecting hole 5 is in a waist shape. The center line of the cross section of the connecting hole 5 passing through the center of the semicircle at one end of the cross section of the connecting hole 5 and the center of the semicircle at the other end of the cross section of the connecting hole 5 is parallel to the direction of the linear reciprocating motion of the push-pull rod 2. As shown in fig. 6 and 7, two article placing grooves 6 are further formed in the push-pull rod 2, the spatial structure of the article placing grooves 6 is a bent U-shaped structure, and the depth of the article placing grooves 6 is smaller than that of the connecting holes 5. One side of the push-pull rod 2 is provided with a storage groove 6, the other side of the push-pull rod 2 is provided with the storage groove 6, and the opening ends of the two storage grooves 6 are flush with the surface of the push-pull rod 2. Each of the placement grooves 6 is located at the end having a semicircular shape in cross section of the connecting hole 5, and the center line of the placement groove 6 coincides with the center line of the end having a semicircular shape in cross section of the connecting hole 5. The diameter of the object placing groove 6 is larger than the width of the connecting hole 5, but the diameter of the object placing groove 6 is smaller than the length of the connecting hole 5, so that the object placing groove 6 and the connecting hole 5 are combined together, two holes formed in the push-pull rod 2 are of a stepped structure, and the directions of the two holes are opposite.
The push-pull rod 2 is connected to one of the jaws 4 by a connecting plate 3, and the push-pull rod 2 is connected to the other jaw 4 by the other connecting plate 3. The spatial position relationship between the two connection plates 3 is in a cross state. As shown in fig. 8, 9, 10, 11 and 12, the connecting plate 3 is provided with a plate body 7, a connecting shaft i 8 and a connecting shaft ii 9. The plate body 7 is of a straight flat structure, and the connecting shaft I8 and the connecting shaft II 9 are of a cylindrical structure integrally. The connecting shaft I8 and the connecting shaft II 9 are fixed on one side of the plate body 7, and the central line of the connecting shaft I8 is parallel to the central line of the connecting shaft II 9. The diameter of the connecting shaft I8 is equal to the width of the connecting hole 5, and the diameter of the connecting shaft I8 is smaller than the length of the connecting hole 5
One side of the connecting shaft I8 is provided with a limiting bulge 10, and the limiting bulge 10 is positioned at the end where the connecting shaft I8 is connected with the plate body 7. The width of the limiting bulge 10 is equal to the width of the connecting hole 5 and the diameter of the connecting shaft I8; the maximum distance from the limiting bulge 10 to the central line of the connecting shaft I8 is equal to the radius of the storage groove 6, and the orientation of the limiting bulge 10 is intersected with the extending direction of the plate body 7, namely the orientation of the limiting bulge 10 is inclined to the extending direction of the plate body 7. During the installation, connecting axle I8 of connecting plate 3 inserts connecting hole 5 from putting 6 positions in the thing groove, and installation back connecting axle I8 stretches into in connecting hole 5 and spacing arch 10 embedding is put in thing groove 6. The diameter of the round hole of the jaw 4 is equal to that of the connecting shaft II 9, and the connecting shaft II 9 is inserted into the round hole of the jaw 4. The connecting shaft I8 can do translational motion and autorotation motion in the connecting hole 5, and the connecting shaft II 9 can do autorotation motion in the round hole.
After the drive holding part of the biopsy forceps is assembled on the biopsy forceps, the push-pull rod 2 moves relative to the pipe sleeve 1, and external force is firstly transmitted to the push-pull rod 2. In the initial state, the push-down pull rod 2 is pulled towards the other end of the pipe sleeve 1 to promote the forceps holder 4 to be in a closed state; the orientation of the stopper projection 10 is parallel to the center line of the cross section of the coupling hole 5. When the jaw 4 needs to be opened, the push-pull rod 2 is pushed to move towards the position of the jaw 4. The self-locking function of the technical scheme is embodied in the closing state of the jaws 4 after the biological tissue sample is clamped.
As shown in fig. 12, when the forceps holder 4 is in the closed state, the limiting protrusion 10 on the connecting shaft i 8 is separated from the placement groove 6 and is located at one end of the connecting hole 5, and the direction of the limiting protrusion 10 is parallel to the center line of the cross section of the connecting hole 5. When the jaws 4 are changed from the closed state to the opening device, the push-pull rod 2 starts to move towards the position of the jaws 4, so that the connecting shaft I8 moves towards the other end of the connecting hole 5, as shown in fig. 11 and 12, until the limiting protrusion 10 is completely positioned in the storage groove 6, the connecting plate 3 is pushed by the push-pull rod 2, the connecting plate 3 swings under the action of the jaws 4 and the push-pull rod 2, so that the limiting protrusion 10 rotates in the storage groove 6, and as shown in fig. 10, when the jaws 4 are completely opened, the orientation of the limiting protrusion 10 inclines to intersect with the central line of the cross section of the connecting hole 5.
After the biological tissue sample is clamped, the push-pull rod 2 is pulled to move towards the direction far away from the clamp 4, so that the connecting shaft I8 moves towards the direction of separating from the object placing groove 6, namely, moves towards the initial position. When the limiting protrusion 10 is arranged in the article placing groove 6, the edge of the limiting protrusion is always connected with the push-pull rod 2, so that the push-pull rod 2 pulls the connecting plate 3 to move together after the push-pull rod 2 moves; meanwhile, the connecting plate 3 is pulled and then the connecting shaft I8 rotates, so that the orientation of the limiting protrusion 10 is changed from a state of being inclined with the center line of the cross section of the connecting hole 5 to a state of being parallel to the center line of the cross section of the connecting hole 5. As shown in fig. 11, when the connecting plate 3 swings to the position where the direction of the limiting protrusion 10 is parallel to the center line of the cross section of the connecting hole 5, the connecting shaft i 8 does not completely enter one end of the connecting hole 5, as shown in fig. 12, and at this time, the push-pull rod 2 needs to be further pulled forcefully to enable the connecting shaft i 8 to enter one end of the connecting hole 5, i.e., to return to the original state. The limiting protrusions 10 are only distributed on one side of the connecting shaft I8, and the other side of the connecting shaft I8 is of an arc surface structure corresponding to the two connecting ends, so that the other side of the connecting shaft I8 can move smoothly in the connecting hole 5. When the forceps holder 4 is changed from the open state to the closed state, as long as the orientation of the limiting protrusion 10 is parallel to the central line of the cross section of the connecting hole 5, the forceps holder 4 is closed, but the connecting shaft I8 does not completely enter one end of the connecting hole 5, the movement stroke of the push-pull rod 2 for enabling the connecting shaft I8 to enter one end of the connecting hole 5 to be restored to the initial state is larger than the movement stroke of the push-pull rod 2 under misoperation, so that the transmission clamping part of the biopsy forceps does not respond to misoperation, and the transmission clamping part of the biopsy forceps can be changed from the closed state to the open state only when external force acts on the push-pull rod 2 during normal manual use and the movement stroke of the push-pull rod 2 for enabling the connecting shaft I8 to enter one end of the connecting hole 5 and be restored to the; the process of preventing the misoperation is also a self-locking process, when the limiting bulge 10 is separated from the article placing groove 6 and is positioned in the area of the connecting hole 5, the connecting plate 3 is limited, the connecting plate 3 and the push-pull rod 2 are relatively fixed, the connecting plate 3 cannot swing on the push-pull rod 2, and thus the closed state of the forceps holder is locked.
Claims (2)
1. A transmission clamping part of biopsy forceps is characterized in that: the transmission clamping part of the biopsy forceps comprises a pipe sleeve (1) and a self-locking connecting rod assembly, the self-locking connecting rod assembly comprises a push-pull rod (2), a connecting plate (3) and two forceps jaws (4), the two forceps jaws (4) are movably mounted on the pipe sleeve (1), the forceps jaws (4) are connected together in a hinged mode through a rotating shaft and movably mounted on the pipe sleeve (1), one end of each forceps jaw (4) is provided with a round hole, the push-pull rod (2) is movably mounted on the pipe sleeve (1) in a sliding mode and linearly reciprocates on the pipe sleeve (1), one end of the push-pull rod (2) is provided with two connecting holes (5) used for being connected with the connecting plate (3), the cross section of each connecting hole (5) is in a waist-round shape, two ends of the cross section of each connecting hole (5) are in a semicircular shape, and the, the center line of the cross section of the connecting hole (5) is parallel to the direction of linear reciprocating motion of the push-pull rod (2), the push-pull rod (2) is connected with one of the jaws (4) through one connecting plate (3), the push-pull rod (2) is connected with the other jaw (4) through the other connecting plate (3), the two connecting plates (3) are in a crossed position relationship, a plate body (7), a connecting shaft I (8) and a connecting shaft II (9) are arranged on the connecting plates (3), the connecting shaft I (8) and the connecting shaft II (9) are fixed on one side of the plate body (7), the center line of the connecting shaft I (8) is parallel to the center line of the connecting shaft II (9), the width of the connecting hole (5) is equal to the diameter of the connecting shaft I (8), the length of the connecting hole (5) is larger than the diameter of the connecting shaft I (8), and the connecting shaft I (8) stretches into the connecting hole (5) and moves in the, the diameter of the round hole is equal to that of the connecting shaft II (9), and the connecting shaft II (9) extends into the round hole.
2. The drive clamping assembly of a bioptome of claim 1, wherein: one side of the push-pull rod (2) is provided with an article placing groove (6), the other side of the push-pull rod (2) is provided with an article placing groove (6), one article placing groove (6) is communicated with one connecting hole (5), the other article placing groove (6) is communicated with the other connecting hole (5), the article placing groove (6) is integrally bent into a U shape, the depth of the article placing groove (6) is smaller than that of the connecting hole (5), the article placing groove (6) is positioned at the end which is semicircular in the cross section of the connecting hole (5), the opening end of the article placing groove (6) is flush with the surface of the push-pull rod (2), the central line of the article placing groove (6) is superposed with the central line of the end which is semicircular in the cross section of the connecting hole (5), the diameter of the article placing groove (6) is larger than that of the connecting hole (5), and the diameter of the article placing groove (6) is smaller than that of the connecting, one side of connecting axle I (8) is equipped with spacing arch (10) and this end that spacing arch (10) are located connecting axle I (8) and plate body (7) and are connected, the width of spacing arch (10) equals the width of connecting hole (5), the maximum distance of spacing arch (10) to the central line of connecting axle I (8) equals the radius of putting thing groove (6), the orientation of spacing arch (10) is crossing with the extending direction of plate body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921018544.5U CN210631249U (en) | 2019-07-02 | 2019-07-02 | Transmission clamping part of biopsy forceps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921018544.5U CN210631249U (en) | 2019-07-02 | 2019-07-02 | Transmission clamping part of biopsy forceps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210631249U true CN210631249U (en) | 2020-05-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921018544.5U Active CN210631249U (en) | 2019-07-02 | 2019-07-02 | Transmission clamping part of biopsy forceps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210631249U (en) |
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2019
- 2019-07-02 CN CN201921018544.5U patent/CN210631249U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Transmission clamping part of biopsy forceps Effective date of registration: 20221018 Granted publication date: 20200529 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Hangzhou Lin'an sub branch Pledgor: Hangzhou Linan Kanghong Precision Technology Co.,Ltd. Registration number: Y2022330002677 |