CN211609925U

CN211609925U - Grabbing type ligation device

Info

Publication number: CN211609925U
Application number: CN201921875943.3U
Authority: CN
Inventors: 张桢
Original assignee: Chongqing Traditional Chinese Medicine Hospital
Current assignee: Chongqing Traditional Chinese Medicine Hospital
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-10-02
Anticipated expiration: 2029-11-01

Abstract

The utility model relates to the technical field of medical equipment, in particular to a grabbing type ligation device, which comprises a ligation head for fixing specific human tissues, a steering part for making the ligation head deflected to different angles, a driving part for providing power for the ligation head and a transmission part for transmitting power, wherein the ligation head comprises a claw hand, a supporting part and a rubber ring, the claw hand comprises a central disc, a plurality of claw fingers which are hinged on the central disc and a reset device for keeping one end of the claw fingers in an open state, the claw fingers are a plurality of rods with bending, and the central disc is connected with the transmission part; the supporting part comprises a blocking part and a hollow shell for the claw to contract into; the rubber ring is sleeved and tied at the root of the tissue along a slope formed when the claw fingers are gathered together under the action of the elastic contraction force of the rubber ring. The utility model discloses a claw finger snatchs the purpose of accomplishing fixed specific human tissue and accomplishing the ligation, can be applicable to the ligation operation of executing of not equidimension tissue.

Description

Grabbing type ligation device

Technical Field

The utility model relates to the technical field of medical equipment, more specifically say, relate to a snatch formula ligation device.

Background

The use principle of the ligation technology is that a ligation device is used for grabbing tissues to be operated, a coil with contractility is released, and the root of the tissues is pressed by continuous tightening force, so that target tissues are necrotized and shed due to ischemia. The existing ligation technology is used for treating hemorrhoids, most of the existing ligation technologies adopt suction type ligation devices, and the suction type ligation device mainly comprises a suction tube, a rubber ring and a push tube; when the rubber ring is sleeved on the periphery of the suction tube, negative pressure is generated in the closed long tube of the instrument when the rubber ring is used, tissues are sucked into the ligation head, the rubber ring is released to perform ligation operation, and the rubber ring slides to the root of the haemorrhoids to be sheathed. However, in the prior art, the rubber ring body is directly sleeved on the nozzle of the suction tube and cannot rotate universally according to the position requirement of the hemorrhoid, and a sleeving and binding blind area exists, so that the rubber ring body cannot be sleeved and bound at the optimal position on the hemorrhoid, and the rubber ring body is easy to fall off.

However, a common disadvantage of prior art ligators is that the aperture of the ligator head is fixed, i.e. only a fixed amount of tissue can be pulled in the ligator, and the size of the target tissue cannot be adjusted. This is inconvenient in clinical practice, and therefore, how to adjust the amount of the ligation tissue of the ligation device is a problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims to solve the technical problem how to adjust the ligation tissue volume of ligation device, for this reason the utility model provides a snatch formula ligation device.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a snatch formula ligation device, pricks the head, makes the rotation portion of the head erroneous tendency different angles of ligation, for the drive division that the ligation head provided power and the transmission portion of transmission power including the cover that is used for fixed human tissue, the cover is pricked the head and is included:

the claw hand comprises a central disc, a plurality of claw fingers and a resetting device, wherein the claw fingers are hinged to the central disc, one end of each claw finger is kept in an open state, the number of the claw fingers is multiple, the claw fingers are provided with bent rods, and the central disc is connected with the transmission part;

the supporting part comprises a blocking part and a hollow shell for the paw hand to contract into, the blocking part is arranged at the end part of the hollow shell in the paw hand entering direction, and when the paw hand is forced to enter the hollow shell, the opened ends of the paw fingers are gathered together under the action of the blocking part to grab human tissues;

the rubber circle, the rubber circle set up in supporting part or a plurality of the cleft hand outside is as a plurality of the cleft finger tip gathers together, the rubber circle is along a plurality of under the effect of self elastic contraction force the slope that the cleft finger formed when one end gathers together reaches a plurality of the root of the human tissue that the cleft hand snatched.

Furthermore, the reset device is a torsion spring arranged between the central disc and the claw fingers.

Furthermore, the resetting device is a tension spring which is connected among the end parts of the plurality of claw fingers.

Furthermore, the end part of the claw finger far away from one end of the fixed disc is provided with a fixed block convenient for fixing human tissues.

Further, a pushing pipe is arranged outside the supporting portion, and a pressure spring for axially separating the pushing pipe from the supporting portion is arranged between the pushing pipe and the supporting portion.

Further, the number of the claw fingers is three.

Furthermore, the steering part is a metal shaped hose or a hollow ball joint universal joint.

Further, the transmission part is a brake cable.

Further, the drive part includes pistol-shaped grab handle, poking wheel and rack, the poking wheel articulate in the grab handle, the poking wheel drives the rack removes on the horizontal direction.

Further, the driving part is provided with a non-return device for preventing the rack from moving when no external force acts on the rack.

According to the technical scheme, the device adopts a claw-hand grabbing mode to fix human tissues, can grab tissues with different sizes, and can realize the purpose that one set of instruments can meet the treatment requirement in the same disease; on the other hand, compare with current suction-type ligation device, reduced and realized the inspiratory structure of negative pressure through the cooperation operation, the effectual input of having practiced thrift the manpower has improved and has executed the operation speed and executed the operation efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the structure of the present invention;

fig. 2 is a schematic front view of one embodiment of the ligation head of the present invention;

fig. 3 is a schematic front view of the ligation head according to an embodiment of the present invention.

In the figure: 1 is a bundling head, 101 is a fixed block, 102 is a claw finger, 103 is a central disc, 104 is a reset device, 105 is a rubber ring, 106 is a blocking part, 107 is a pull rod, 108 is a pressure spring, 109 is a pushing pipe, 2 is a steering part, 3 is a line pipe, 4 is a steel wire, 5 is a guide rail, 6 is a shift lever, 7 is a reset spring, 8 is a rack, 9 is a dial, 10 is a transmission gear, and 11 is a grab handle.

Detailed Description

The core of the utility model is to provide a grabbing type ligation device, which realizes the ligation tissue amount of the ligation device.

The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

As shown in fig. 1 and 2, a grasping type ligation device, which is mainly suitable for the treatment of hemorrhoids, comprises a ligation head 1 for fixing human tissues, a steering part 2 for making the ligation head 1 deviate to different angles, a driving part for providing power for the ligation head 1 and a transmission part for transmitting power, wherein the ligation head 1 comprises:

a plurality of claws 102, each of which includes a central plate 103, a plurality of fingers 102 hinged to the central plate 103, and a return device 104 for maintaining one end of each of the fingers 102 in an open state, wherein the number of the fingers 102 is large, the fingers 102 are curved rods, and the central plate 103 is connected to the transmission part; in the device, in order to make the central disk 103 move in a fixed direction, a pull rod 107 is arranged at the center of the central disk 103, the pull rod 107 passes through the axial center of the supporting part and is connected with the transmission part, at the moment, the pull rod 107 moves along the axial center line direction of the supporting part, and the central disk 103 also makes linear reciprocating movement in the direction;

a support part, which comprises a blocking part 106 and a hollow shell for the paw hand to contract into, wherein the blocking part 106 is arranged at the end part of the hollow shell in the direction of the paw hand to enter; this hollow shell is enclosed by the baffle that the pipe and pipe kept away from the setting of stop part 106 one end, and stop part 106 is the ring or the pipe tip that set up at the pipe tip, and when stop part 106 was the pipe tip, the pipe tip set up the chamfer. When the claw hand is retracted into the hollow shell by the pulling force of the pull rod 107, the plurality of claw fingers 102 touch the blocking part 106 in the movement process, and along with retraction, under the limitation of the blocking part 106, the opened ends are gradually gathered, and the end parts grab human tissues;

the rubber ring 105 is arranged outside the supporting portion or the plurality of claws, when the end portions of the claws 102 are gathered together, the rubber ring 105 reaches the roots of the human tissues grabbed by the claws along a slope formed when one ends of the claws 102 are gathered together under the action of the elastic contraction force of the rubber ring 105.

In a particular embodiment, the return means 104 is a torsion spring disposed between the central disk 103 and the fingers 102. One end of the claw finger 102 is hinged with the central disc 103, and the other end is kept in an open state; the torsion spring is a mechanical device which carries out torsional deformation after bearing a certain torque and can restore the original shape by depending on the toughness of the torsion spring, and mainly comprises a body and two force arms. In the device, the torsion spring is arranged on the central disk 103, two force arms are respectively contacted with the central disk 103 and the claw fingers 102, when the claw enters the supporting part and the claw fingers 102 are extruded by the blocking part 106, the torsion spring is stressed to generate torsional deformation, and when the claw leaves the supporting part, the claw fingers 102 are kept in an opening state along with the restoration of the torsion spring under the elasticity of the torsion spring.

In a specific embodiment, the end of the claw fingers 102 away from the end of the fixed disk is provided with a fixed block 101 for fixing human tissues. The fixing block 101 is an arc protrusion vertical to the claw finger 102, and has the function that when the end of the claw finger 102 is grabbed, the contact surface between the fixing block and the root of the tissue to be operated is larger in the direction parallel to the normal skin, so that the fixation of the root of the tissue to be operated is more conveniently completed.

In another specific embodiment, as shown in fig. 3, the reset device 104 is a plurality of tension springs connected to the center between the fingers 102, the tension springs are a common spring mainly subjected to tension deformation, the middle portions of the fingers 102 are hinged to the central plate 103, one ends of the fingers 102 are respectively connected to one ends of the tension springs, the other ends of the tension springs are connected to the central position, and the other ends of the fingers 102 are kept in an open state under the action of the tension springs. When the claw enters the supporting portion and the claw finger 102 is squeezed by the blocking portion 106, the tension spring is stressed to deform and elongate, and when the claw leaves the supporting portion, the claw finger 102 is stretched under the action of the tension spring restoring to the original state. Furthermore, a pushing tube 109 is arranged outside the supporting part, and the pushing tube 109 is used for applying an external force to the rubber ring 105, so that the rubber ring 105 is separated from the ligation head 1 to ligate the grasped and fixed human tissue, and the success rate of the operation is increased; a pressure spring 108 which enables the pushing tube 109 and the supporting part to be separated along the axial direction is arranged between the pushing tube 109 and the supporting part, the pressure spring 108 is a spring which mainly bears pressure deformation, and the arrangement purpose is that when the central disc 103 is under tension, the central disc 103 retracts into the supporting part firstly due to the existence of the pushing force of the pressure spring 108, the claw hand finishes fixing the root of the tissue to be operated, then the supporting part retracts into the pushing tube 109, and the rubber ring 105 is pushed to be separated from the supporting part to perform ligation on the root of the tissue to be operated.

In a specific embodiment, the number of fingers 102 is three. Three is the minimum number of fingers 102, and the gripper can complete the grabbing operation under the state of the simplest structure. As the number of fingers 102 increases, the grip becomes more secure.

In a specific embodiment, the steering portion 2 is a metal forming hose or a hollow ball joint, and the main purpose of the steering portion 2 is to provide a certain angle change for the ligation head 1 so as to facilitate the grasping of the ligation head 1, and on the other hand, the hollow structure of the steering portion also reserves a certain arrangement space for the transmission portion. The metal shaping hose is a composite metal pipe which is mainly formed by winding and coating a metal spring steel wire and a galvanized iron wire or other metal wire materials, spiral grains are arranged outside a hollow part, an electric wire with a certain size can pass through the inside of the pipe hole, the hose can be bent into a certain shape at will in a three-dimensional space and can keep the shape of the hose, the length and the size are basically stable during bending, the bent hose has a certain supporting force to support objects with certain weight, and the supporting force is controllable within a certain range. Ball joint universal joints are also known in the art, such as the universal joint disclosed in publication number CN 102207232A.

In a specific embodiment, the transmission part is a brake cable. The brake cable is also called as a brake tube and is a common technology on the bicycle, the brake cable mainly comprises a cable tube 3 and a steel wire 4, the cable tube 3 wraps the steel wire 4, and the steel wire 4 can freely slide along the cable tube 3. The wire tube 3 has two layers, wherein the inner layer is made of steel, and the outer layer is made of rubber; both the steel wire 4 and the conduit 3 can be bent to a limited extent, but the length is basically fixed and can not be elongated nor shortened; the lower end of the conduit 3 is provided with a force-receiving member, which is not bendable. When the steel wire 4 is pulled, because the other end of the steel wire 4 is fixed, the steel wire 4 has a tendency of being straightened, the spool 3 sleeved outside the steel wire 4 naturally also develops towards the straightness, so the spool 3 begins to extend but does not extend, and because the upper end of the spool 3 is finally abutted by the fixed fixing piece, the lower end of the spool 3 extends towards the direction of the fixed point, so that the stress piece is pushed, and the transmission of the tensile force by the steel wire 4 is completed in a bending state. In this device, the spool 3 is mainly provided in the steering portion 2, and both ends of the wire 4 are connected to the rack 8 and the center disk 103, respectively.

In a specific embodiment, the driving portion comprises a pistol-shaped grab handle 11, a poking wheel and a rack 8, the poking wheel is hinged to the grab handle 11, the rack 8 is provided with a guide rail 5, the poking wheel drives the rack 8 to reciprocate in the horizontal direction under the limitation of the guide rail 5, and one end of the rack 8 is connected with a brake cable. The poking wheel comprises a coaxial poking wheel 9 and a gear, the surface of the poking wheel 9 is provided with a bulge, the poking of fingers to the poking wheel 9 is facilitated, in the rotating process of the poking wheel 9 and the gear, the gear drives the rack 8 to move in the horizontal direction, in order to enable the rack 8 to move conveniently, the poking wheel 9 is more convenient to bear force, a transmission gear 10 can be arranged between the poking wheel and the rack 8, and the poking wheel can move at the rack 8 at a more proper speed and force.

In a specific embodiment, the driving part is provided with a non-return device for preventing the rack from moving when no external force acts on the rack, and the non-return device can enable the claw to move towards the same direction in the grabbing process, so that the claw is prevented from being loosened unintentionally when the external force disappears. The non-return structure comprises a ratchet wheel arranged on a fluctuation wheel or a transmission support, and can also be a one-way mechanism comprising a shift lever 6 and a return spring 7, the middle part of the shift lever 6 is hinged with a grab handle 11, one end of the shift lever is abutted against the position of a dentate bone of a rack 8, a blocking block is arranged between the end part and the hinged point to block the shift lever 6 from moving reversely on the rack 8, when the rack 8 is subjected to forward duration, the end part of the shift lever 6 moves forwards along with the rack 8 and gradually crosses a tooth peak to enter the next tooth valley, when the limit is not needed, the other end of the shift lever 6 is manually pressed, the shift lever 6 rotates and inclines, the end part; the purpose of the return spring 7 is to make the shift lever 6 in a blocking state when no external force is applied, so as to realize the purpose of non-return.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a snatch formula ligation device, pricks head (1), makes the cover prick head (1) and be partial to steering part (2) of different angles, for the cover prick head (1) provide the drive division of power and the transmission portion of transmission power that a ware, its characterized in that, the cover is pricked head (1) and is included:

a gripper comprising a central plate (103), a plurality of fingers (102) hinged to the central plate (103), and a return device (104) for maintaining one end of the fingers (102) in an open state, wherein the fingers (102) are a plurality of curved rods, and the central plate (103) is connected to the transmission part;

the supporting part comprises a blocking part (106) and a hollow shell for the paw hand to contract into, the blocking part (106) is arranged at the end part of the hollow shell in the paw hand entering direction, and when the paw hand is forced to enter the hollow shell, the opened ends of the paw fingers (102) are gathered under the action of the blocking part (106) to grab human tissues;

the rubber ring (105) is arranged outside the supporting part or the claw, and when the end parts of the claw fingers (102) are gathered together, the rubber ring (105) reaches the roots of human tissues grabbed by the claw.

2. The grasping ligation device according to claim 1, wherein: the end part of the claw finger (102) far away from one end of the fixed disc is provided with a fixed block (101) convenient for fixing human tissues.

3. The grasping ligation device according to claim 1, wherein: and a pushing pipe (109) is arranged outside the supporting part, and a pressure spring (108) which enables the pushing pipe (109) and the supporting part to be separated along the axial direction is arranged between the pushing pipe (109) and the supporting part.

4. The grasping ligator according to any one of claims 1 to 3, wherein: the number of the claw fingers (102) is three.

5. The grasping ligation device according to claim 4, wherein: the reset device (104) is a torsion spring arranged between the central disc (103) and the claw fingers (102).

6. The grasping ligation device according to claim 4, wherein: the reset device (104) is a tension spring which is connected among the end parts of the claw fingers (102).

7. The grasping ligation device according to claim 4, wherein: the steering part (2) is a metal shaping hose or a hollow ball joint universal joint.

8. The grasping ligation device according to claim 4, wherein: the transmission part is a brake cable.

9. The grasping ligation device according to claim 4, wherein: the drive division includes pistol form grab handle (11), thumb wheel and rack (8), the thumb wheel articulate in grab handle (11), the thumb wheel drives rack (8) move on the horizontal direction.

10. The grasping ligation device according to claim 9, wherein: the driving part is provided with a non-return device for preventing the rack from moving when no external force acts on the rack.