CN210631264U

CN210631264U - Transmission clamping part of hemostatic clamp

Info

Publication number: CN210631264U
Application number: CN201921018541.1U
Authority: CN
Inventors: 郑鹏; 黄伟; 陈朝阳
Original assignee: Hangzhou Linan Kanghong Precision Technology Co Ltd
Current assignee: Hangzhou Linan Kanghong Precision Technology Co Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-05-29
Anticipated expiration: 2029-07-02

Abstract

The utility model discloses a hemostatic clamp's transmission clamping parts, it includes sleeve pipe, chuck, stopper, backing pin, push-and-pull rod, pine takes off the pipe, the symmetric distribution has two chucks on the stopper, the stopper be located the sleeve pipe in and with sleeve pipe sliding connection, the backing pin is fixed in sheathed tube one end, the backing pin is located between two chucks, the pine takes off through buckle swing joint between pipe and the sleeve pipe, the push-and-pull rod stretches into at the cover intraductal and push-and-pull rod and stopper swing joint, the push-and-pull rod is linear motion along the sleeve pipe central line.

Description

Transmission clamping part of hemostatic clamp

Technical Field

The utility model relates to a transmission clamping part of a hemostatic clamp.

Background

In the medical field, the hemostatic clamp used for endoscope hemostasis can directly clamp and close macroscopic hemorrhagic vessels and focus under minimally invasive conditions. The hemostatic clamps are provided with a hand-held operating part and a transmission clamping part. The transmission clamping part of the hemostatic clamp is provided with a sleeve, chucks, a limiting block, a stop pin, a push-pull rod and a release pipe, wherein the two chucks are symmetrically distributed on the limiting block, the limiting block is positioned in the sleeve and is in sliding connection with the sleeve, the stop pin is fixed at one end of the sleeve, the stop pin is positioned between the two chucks, the release pipe is movably connected with the sleeve through a buckle, the push-pull rod extends into the sleeve and is movably connected with the limiting block, and the push-pull rod makes linear motion along the central line of the sleeve. The handheld operation part is at least provided with a handle, a movable handle, a hose and a traction steel wire, the hose is fixed with the handle, the traction steel wire is positioned in the hose, the movable handle is installed on the handle in a sliding mode, the movable handle is fixedly connected with the traction steel wire, and the traction steel wire can move in the hose after the movable handle is pulled. The release pipe is fixedly connected with the hose, and the traction steel wire is fixedly connected with the push-pull rod. The limiting block is pushed to the outside of the sleeve, the clamping heads are opened, and the limiting block is pulled to the inside of the sleeve, and the clamping heads are closed. Once the clamping heads are closed, the limiting blocks and the push-pull rod can be automatically separated, and then the sleeve pipe and the release pipe are separated after the push-pull rod and the release pipe interact, so that the clamping heads, the sleeve pipe, the limiting blocks and the stop pins can be separated from the hemostatic clamp.

The technology for driving the limiting block to be separated from the push-pull rod in the prior art mainly adopts a fracture scheme and a hook scheme. In the fracture scheme, a connection relation allowing the limiting block to move in a single direction is established between the limiting block and the sleeve through a buckle structure, the push-pull rod is designed to be capable of being fractured into two sections under a certain condition, namely, the force required by the push-pull rod to pull the limiting block needs to be larger after the chuck is clamped, when the push-pull rod is pulled by force, the push-pull rod is fractured and separated from the limiting block instantly, and the limiting block is limited to a fixed position in the sleeve through the buckle structure. In the crotch scheme, also establish the relation of connection that allows stopper unidirectional movement through buckle structure between stopper and the sleeve pipe, be equipped with the through-hole on the stopper, be equipped with the drag hook on the push-and-pull rod, the push-and-pull rod passes through the drag hook embedding in the through-hole with stopper swing joint, after stopper and the fixed position department of being restricted in the sleeve pipe by buckle structure, the required power grow of pulling the stopper, so the drag hook can warp and break away from the through-hole after pulling the push-and-pull rod with great power, the push-and-pull rod just breaks away from. Both of these disengagement schemes have the disadvantage that the force required to drive the stop block out of engagement with the push-pull rod is much greater than the force required to drive the chuck to grip. The reason for this is that the force required to disengage the stopper from the push-pull rod, the force required to move the snap structure when the stopper is positioned in the sleeve, and the force required to clamp the collet must be three independent forces, which must be independent and function in order during the implementation, the force required to move the snap structure when the stopper is positioned in the sleeve is greater than the force required to clamp the collet, the force required to disengage the stopper from the push-pull rod is greater than the force required to move the snap structure when the stopper is positioned in the sleeve, otherwise the mechanical structures in the fracture scheme and the hook scheme will not be able to perform corresponding actions according to the predetermined design.

Therefore, the hemostatic clips have obvious blocking operation hand feeling in the use process, the operation process is not beneficial to performing a stable medical operation process, and obvious risks exist for the medical operation.

Disclosure of Invention

The to-be-solved technical problem of the utility model is how to reduce the stopper and break away from required power with the push-and-pull rod, obtain a hemostatic clamp's transmission clamping part from this.

In order to solve the technical problem, the utility model adopts the following technical scheme: the transmission clamping part of the hemostatic clamp comprises a sleeve, chucks, a limiting block, a stop pin, a push-pull rod and a release pipe, wherein the two chucks are symmetrically distributed on the limiting block, the limiting block is positioned in the sleeve and is in sliding connection with the sleeve, the stop pin is fixed at one end of the sleeve, the stop pin is positioned between the two chucks, the release pipe is movably connected with the sleeve through a buckle, the push-pull rod extends into the sleeve and is movably connected with the limiting block, the push-pull rod makes linear motion along the central line of the sleeve, the limiting block is provided with an installation part, an elastic part and a transmission part, the installation part is disc-shaped, the main body of the elastic part is of a long strip structure, one side of the main body of the elastic part is provided with a limiting bulge I, the other side of the main body of the elastic part is provided with a limiting bulge II, and the orientation, one side on the installation department is equipped with two elastic parts, the chuck is located the opposite side of installation department, the elastic part is symmetrical for the central line of installation department, and the orientation of the spacing arch II of one of them elastic part is relative with the orientation of the spacing arch II of another elastic part, be equipped with operation face I on the spacing arch I, operation face I is towards the installation department, be equipped with operation face II on the spacing arch II, operation face II is towards the installation department, the transmission part is cylindric, the one end and the installation department of transmission part are connected, the central line of transmission part coincides with the central line of installation department, the distance of the other end of transmission part to the installation department is less than the distance of operation face II to the installation department, the stopper is in the spacing arch I department and the interior wall interference fit of sleeve pipe of elastic part, be equipped with two lockholes I on the sleeve pipe, lockhole I is located the motion range, and one end of the push-pull rod is provided with a flange, and the limit block is movably connected with the push-pull rod through a limit bulge II of the elastic part and the end of the transmission part clamping the push-pull rod provided with the flange.

The limiting block is in interference fit with the inner wall of the sleeve at the limiting bulge I of the elastic part, and the limiting block is based on the tendency that the elastic part inclines towards the periphery of the installation part, namely the whole elastic part and the central line of the installation part are in a mutual inclined position relation in a natural state. The limiting bulge I of the elastic part forms an unfolding state on the limiting block once being separated from the sleeve and not being restricted by the inner wall of the sleeve, so that the limiting bulge I extends into the lock hole I, and the position relation between the limiting block and the sleeve is fixed immediately. Meanwhile, the original limiting block is movably connected with the push-pull rod through the limiting bulges II of the elastic parts and the end, provided with the flange, of the push-pull rod clamped by the transmission part, and after the limiting bulges I of the two elastic parts are unfolded, the connection relation disappears immediately. Therefore, in the technical scheme, the force required for limiting the position of the limiting block in the sleeve is the same as the force required for separating the push-pull rod from the limiting block; in addition, in the technical scheme, other resistance is not involved in the process that the chuck clamps the limiting protrusion I to extend into the lock hole I, and the force required by limiting the position of the limiting block in the sleeve is the same as the force required by driving the chuck to clamp. Therefore, the force required for separating the limiting block from the push-pull rod is effectively reduced. The force required to drive the motion of the drive clamping member of the hemostatic clamp is very small.

In order to shorten the process that the limiting block is separated from the push-pull rod, the distance from the operation surface I to the installation part is smaller than the distance from the operation surface II to the installation part, so that when the limiting protrusion I is embedded into the lock hole I, the elastic part swings, and the limiting protrusion II is separated from the flange of the push-pull rod rapidly at the very high acceleration of the limiting protrusion II at the operation surface II, and the process that the limiting block is separated from the push-pull rod is completed in a very short time.

Be equipped with the inclined plane on spacing arch I among this technical scheme, the inclined plane is towards the one side at installation department place. The inclined plane has the function of expanding the opening size between the two limiting bulges II when the limiting bulges I are embedded into the lock holes I, so that the limiting blocks are smoothly separated from the push-pull rod.

The release pipe is movably connected with the sleeve through a buckle, the buckle structure comprises a release surface arranged on the push-pull rod, two symmetrically distributed lock holes II at the other end of the sleeve, and two connecting lugs at one end of the release pipe, wherein a lock head is arranged on each connecting lug. The unlocking surface is of a side structure of a round table, the cross section of the lock hole II is of a right trapezoid shape, the lock head faces to the central line of the releasing pipe, the releasing pipe is embedded into the lock hole II through the lock head and is movably connected with the sleeve, and the lock head is located in the movement range of the unlocking surface of the push-pull rod. The cross section of the lock hole II is in a right trapezoid shape, so that the lock head can be separated from the sleeve rapidly, and the effect of rapid separation is achieved.

The utility model adopts the above technical scheme: the transmission clamping part of the hemostatic clamp can complete the operations of clamping the chuck, separating the limiting block from the push-pull rod and separating the sleeve from the release pipe by driving the limiting block with the same acting force due to the limiting block structure, thereby obviously reducing the force required by separating the limiting block from the push-pull rod.

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 use state of a transmission clamping part of a hemostatic clamp of the present invention;

fig. 2 is a schematic view ii illustrating a use state of a driving and clamping member of a hemostatic clamp according to the present invention;

fig. 3 is a schematic view showing a use state of a driving clamping member of a hemostatic clamp according to the present invention;

fig. 4 is a schematic view iv of a use state of a driving clamping part of the hemostatic clamp according to the present invention;

fig. 5 is a schematic view v illustrating a use state of the driving clamping member of the hemostatic clamp according to the present invention.

Detailed Description

As shown in fig. 1, 2, 3, 4 and 5, the transmission clamping component of the hemostatic clamp comprises a sleeve 1, a clamping head 2, a limiting block 3, a stop pin 4, a push-pull rod 5 and a release tube 6.

The sleeve 1 is a tubular structure, and a hollow channel is arranged in the sleeve.

The stop pin 4 is fixedly arranged at one end of the sleeve 1, and the loosening pipe 6 is movably arranged at the other end of the sleeve 1 through a buckle.

The limiting block 3 comprises an installation part 7, an elastic part 8 and a transmission part 9. The mounting part 7 is a disc-shaped structure, the transmission part 9 is a straight cylindrical structure, and one end of the transmission part 9 is connected with the mounting part 7. The centre line of the mounting portion 7 coincides with the centre line of the transmission portion 9. The mounting portion 7 is also provided with two resilient portions 8 on the side where the transmission portion 9 is mounted. The main part of elastic part 8 is rectangular form structure, and one side of the main part of elastic part 8 is equipped with spacing protruding I10, and the opposite side of the main part of elastic part 8 is equipped with spacing protruding II 11, and spacing protruding I10, spacing protruding II 11 all are located the one end of the main part of elastic part 8, and the orientation of spacing protruding I10 is opposite with spacing protruding II 11's orientation, and the other end and the installation department 7 of the main part of elastic part 8 are connected. The two elastic portions 8 are in a symmetrical positional relationship with respect to the center line of the mounting portion 7. The direction of the limiting bulge II 11 of one elastic part 8 is opposite to the direction of the limiting bulge II 11 of the other elastic part 8; the direction of the limiting bulge I10 of any one elastic part 8 is back to the other elastic part 8; the position of the central line of the mounting part 7 is the inner part of the limiting block 3, and the limiting bulge II 11 faces the inner side of the limiting block 3 and the limiting bulge I10 faces the outer side of the limiting block 3. The elastic part 8 inclines to the outside of the limiting block 3 in a natural state. Be equipped with operation face I12 on spacing arch I10, operation face I12 is towards installation department 7. The limiting bulge II 11 is provided with an operation surface II 13, and the operation surface II 13 also faces the mounting part 7. The distance from the working surface I12 to the mounting part 7 is smaller than the distance from the working surface II 13 to the mounting part 7. The distance from the other end of the transmission part 9 to the mounting part 7 is smaller than the distance from the working surface II 13 to the mounting part 7. The limiting protrusion I10 is provided with a slope 18, and the slope 18 faces to one side of the mounting part 7.

Two chucks 2 are installed on the other side of the limiting block 3, and the chucks 2 are symmetrically distributed relative to the central line of the installation part 7.

The limiting block 3 is arranged in the sleeve 1, and the limiting block 3 can freely slide in the sleeve 1. After installation, the stop pin 4 is positioned between the two chucks 2; elastic component 8 receives the extrusion of sleeve pipe 1 inner wall, and spacing protruding I10 top is on sleeve pipe 1's inner wall, and stopper 3 is in elastic component 8 spacing protruding I10 department and sleeve pipe 1 inner wall interference fit. The elastic part 8 gathers towards the inside of the limiting block 3. One end of the push-pull rod 5 is provided with a flange, the flange extends between the gathered elastic parts 8, two working surfaces II 13 are tightly pressed on one side of the flange, the transmission part 9 is positioned on the other side of the flange and tightly props against the central position of the end part of the push-pull rod 5, the limiting block 3 is movably connected with the push-pull rod 5 by clamping the end, provided with the flange, of the push-pull rod 5 through a limiting bulge II 11 of the elastic part 8 and the transmission part 9, and the limiting block 3 and the push-pull rod 5 synchronously move in the direction parallel to the central line of the sleeve 1 in a connecting state; the push-pull rod 5 extends into the casing 1 in such a way that the centre line of the push-pull rod 5 is parallel to the centre line of the casing 1. Two lock holes I14 are arranged in the middle of the casing 1, and the two lock holes I14 are symmetrically distributed relative to the center line of the casing 1.

The other end of the sleeve 1 is provided with two lock holes II 15, and the two lock holes II 15 are symmetrically distributed relative to the central line of the sleeve 1. The cross section of the lock hole II 15 is in a right-angle trapezoid shape. The release pipe 6 is a tubular structure, and a hollow channel is arranged in the release pipe. One end of the release pipe 6 is provided with two connecting lugs which are symmetrically distributed relative to the central line of the release pipe 6. The connecting lug is provided with a locking head 16, and the locking head 16 faces to the central line of the release pipe 6. The release pipe 6 is embedded in the lock hole II 15 through a lock head 16 and is movably connected with the sleeve 1. The push-pull rod 5 is provided with an unlocking surface 17 at the end close to the flange, and the unlocking surface 17 is in a side structure of a circular truncated cone.

In use, the push-pull rod 5 is pushed and pulled to move linearly along the central line of the casing 1. In an initial state, the limiting block 3 is located between the stop pin 4 and the lock hole I14. As shown in fig. 1 and 2, after the push-pull rod 5 pushes the limit block 3 to move to the position of the stop pin 4, the chuck 2 extends out of the sleeve 1 to be opened; to close the collet 2, the push-pull rod 5 then pulls the stop 3 towards the position of the release tube 6. As shown in fig. 3, when the stop block 3 moves towards the position of the release pipe 6, the chuck 2 retracts into the sleeve 1, and the chuck 2 moves towards the closed state. Because the lock hole I14 is positioned in the movement range of the limiting protrusion I10 of the limiting block 3, the limiting protrusion I10 which props against the inner wall of the sleeve 1 moves to the position of the lock hole I14 and then is embedded into the lock hole I14; the inclined surface 18 of the limiting protrusion I10 is beneficial to increasing the swing range of the elastic part 8, so that the opening width between the two limiting protrusions II 11 is increased. The working surface I12 and the surface of the casing 1 in the lock hole I14 form a mutually limited position relation, so that the limiting block 3 is fixed at the inner position of the casing 1. At the same time, the flange of the push-pull rod 5 is disengaged from the stopper 3 because the elastic portion 8 is inclined outward of the stopper 3. As shown in fig. 4 and 5, since the locking head 16 is located within the movement range of the unlocking surface 17 of the push-pull rod 5, any generatrix on the unlocking surface 17 intersects with the center line of the push-pull rod 5; therefore, after the unlocking surface 17 is positioned by the locking head 16, the locking head 16 moves along the unlocking surface 17 and moves in the direction of disengaging from the locking hole II 15; when the release pipe 6 is pulled by external force, the lock head 16 is separated from the sleeve 1 along the inclined part of the lock hole II 15. So that both the push-pull rod 5 and the release tube 6 are released from the sleeve 1.

Claims

1. The utility model provides a hemostatic clamp's transmission clamping part, this hemostatic clamp's transmission clamping part includes sleeve pipe (1), chuck (2), stopper (3), backing pin (4), push-and-pull rod (5), takes off pipe (6) of taking off, stopper (3) are gone up the symmetric distribution and have two chucks (2), stopper (3) are located sleeve pipe (1) and with sleeve pipe (1) sliding connection, the one end at sleeve pipe (1) is fixed in backing pin (4), backing pin (4) are located between two chucks (2), take off through buckle swing joint between pipe (6) and the sleeve pipe (1) loose, push-and-pull rod (5) stretch into in sleeve pipe (1) and push-and-pull rod (5) and stopper (3) swing joint, push-and-pull rod (5) are linear motion along sleeve pipe (1) central line, its characterized in that: the stopper (3) is equipped with installation department (7), elastic component (8) and transmission part (9), installation department (7) are discoid, the main part of elastic component (8) is rectangular form structure, one side of the main part of elastic component (8) is equipped with spacing arch I (10), the opposite side of the main part of elastic component (8) is equipped with spacing arch II (11), the orientation of spacing arch I (10) is opposite with the orientation of spacing arch II (11), one side on installation department (7) is equipped with two elastic components (8), chuck (2) are located the opposite side of installation department (7), elastic component (8) are symmetrical for the central line of installation department (7), the orientation of spacing arch II (11) of one of them elastic component (8) is relative with the orientation of spacing arch II (11) of another elastic component (8), be equipped with operation face I (12) on spacing arch I (10), the operation face I (12) faces the installation part (7), the operation face II (13) is arranged on the limiting bulge II (11), the operation face II (13) faces the installation part (7), the transmission part (9) is cylindrical, one end of the transmission part (9) is connected with the installation part (7), the central line of the transmission part (9) coincides with the central line of the installation part (7), the distance from the other end of the transmission part (9) to the installation part (7) is smaller than the distance from the operation face II (13) to the installation part (7), the limiting block (3) is in interference fit with the inner wall of the sleeve (1) at the limiting bulge I (10) of the elastic part (8), the sleeve (1) is provided with two locking holes I (14), the locking hole I (14) is located in the movement range of the limiting bulge I (10) of the limiting block (3), and one end of the push-pull rod (5) is provided with a flange, the limiting block (3) clamps the end of the push-pull rod (5) provided with the flange through a limiting bulge II (11) of the elastic part (8) and the transmission part (9) and is movably connected with the push-pull rod (5).

2. The drive clamping member of the hemostatic clamp of claim 1, wherein: the distance from the working surface I (12) to the mounting part (7) is smaller than the distance from the working surface II (13) to the mounting part (7).

3. The drive clamping member of the hemostatic clamp of claim 1, wherein: be equipped with inclined plane (18) on spacing arch I (10), inclined plane (18) are towards one side at installation department (7) place.

4. The drive clamping member of the hemostatic clamp of claim 1, wherein: be equipped with unlocking face (17) on push-and-pull rod (5), unlocking face (17) are the side structure of round platform, the other end of sleeve pipe (1) is equipped with two symmetric distribution lockholes II (15), the transversal right trapezoid that personally submits of lockhole II (15), the one end of release pipe (6) is equipped with two engaging lugs, be equipped with tapered end (16) on the engaging lug, tapered end (16) are towards the central line of release pipe (6), release pipe (6) are through tapered end (16) embedding and sleeve pipe (1) swing joint in lockhole II (15), tapered end (16) are located the motion range of unlocking face (17) of push-and-pull rod (5).