CN-116473653-B - Desk type rod breaker

CN116473653BCN 116473653 BCN116473653 BCN 116473653BCN-116473653-B

Abstract

The invention provides a table type rod breaking device which comprises a fixed base, a rod breaking cutter body and a rod breaking driving shaft, wherein the fixed base is provided with a driving tooth socket and a stop tooth socket, the rod breaking cutter body comprises a cutter body and a stop pawl, the cutter body is rotationally connected with the fixed base, the cutter body is provided with the stop pawl and a long chute, the stop pawl is matched with the stop tooth socket, one end of the long chute is close to the driving tooth socket, the other end of the long chute is far away from the driving tooth socket, the rod breaking driving shaft comprises a driving shaft body and a guide device, the end part of the driving shaft body is provided with a driving gear, the driving gear is matched with the driving tooth socket, the guide device is arranged at one end part of the driving shaft body, and the guide device can move along the extending direction of the long chute so as to enable the driving gear to be meshed with or separated from the driving tooth socket. The invention can save more labor in breaking bar operation, and greatly shortens the breaking bar stroke, thereby shortening the included angle between the breaking bar driving shaft and the breaking bar cutter body and reducing the whole volume of the desk type breaking bar device.

Inventors

FAN GUOPING
LI WENWU
GAO GUOQIANG
ZHANG XIAO
LIU ZHENHAI

Assignees

北京市富乐科技开发有限公司

Dates

Publication Date: 20260508
Application Date: 20230426

Claims (10)

1. A table-type rod-breaking device, characterized by comprising the following steps: The fixed base is provided with a driving tooth slot and a stopping tooth slot; The broken rod cutter body comprises a cutter body and a stop pawl, the cutter body is connected with the fixed base in a rotating way, the cutter body is provided with the stop pawl and a long chute, the stop pawl is matched with the stop tooth slot, one end of the long chute is close to the driving tooth slot, the other end of the long chute is far away from the driving tooth slot, and the broken rod cutter body and the fixed base are provided with a plurality of groups of connecting rod jacks which are mutually corresponding and have different apertures; the broken rod driving shaft comprises a driving shaft body and a guiding device, wherein a driving gear is arranged at the end part of the driving shaft body, the driving gear is matched with the driving tooth socket, the guiding device is arranged at one end part of the driving shaft body, the other end of the driving shaft body can be close to or far away from the fixed base, the guiding device is movably connected with the long sliding groove, and the guiding device can move along the extending direction of the long sliding groove so as to enable the driving gear to be meshed with or separated from the driving tooth socket.
2. The bench breaker as in claim 1 wherein, The end part of the cutter body is movably connected with the stop pawl; The broken rod cutter body further comprises a pawl reset assembly, wherein the pawl reset assembly is respectively connected with the cutter body and the stop pawl; And under the condition that the stopping pawl moves downwards along the extending direction of the stopping tooth groove to be separated from the stopping tooth groove, the stopping pawl is reset under the action of the pawl resetting assembly.
3. A bench breaker as in claim 2 wherein, The pawl reset assembly comprises a reset spring and a spring fixing column; The spring fixing column is connected with one end, close to the stopping tooth groove, of the cutter body, the reset spring is sleeved on the spring fixing column, and two ends of the reset spring are fixedly connected with the cutter body and the stopping pawl respectively.
4. A bench breaker as in claim 3 wherein, The pawl reset assembly is provided with two pawl reset assemblies, the two pawl reset assemblies are oppositely arranged; one ends of the two return springs are respectively overlapped with two sides of the middle line of the stop pawl.
5. A bench breaker as in claim 3 wherein, A first mounting tongue and a second mounting tongue are arranged at one end of the cutter body, which is close to the stop tooth groove, the first mounting tongue and the second mounting tongue are arranged oppositely, the first mounting tongue and the second mounting tongue jointly define a mounting space, and the spring fixing column penetrates at least one of the first mounting tongue and the second mounting tongue to be connected with the other of the first mounting tongue and the second mounting tongue; The reset spring is arranged in the installation space; The stop pawl is movably connected with the first mounting tongue and/or the second mounting tongue.
6. A bench breaker as in claim 3 wherein, The pawl reset assembly further comprises a limiting piece, wherein the limiting piece is arranged on the outer side of the end portion, connected with the stop pawl, of the reset spring.
7. A bench breaker as claimed in any of claims 1 to 6 wherein, The driving shaft body comprises a driving part and a connecting part; the driving part is connected with the connecting part and forms an included angle, and the opening direction of the included angle faces the fixed base; One end of the driving part is provided with the guide device and the driving gear, and the other end of the driving part is connected with one end of the connecting part; the other end of the connecting portion extends towards a direction away from the driving portion and can be close to or far away from the fixed base.
8. A bench breaker as claimed in any of claims 1 to 6 wherein, One end of the fixed base, which is rotationally connected with the cutter body, is provided with a positioning block, and the positioning block protrudes out of the fixed base; One end of the cutter body, which is rotationally connected with the fixed base, is provided with a limiting part, the limiting part protrudes out of the cutter body, and the limiting part can be contacted with or separated from the positioning block; Under the condition that the limiting part is in contact with the positioning block, the connecting rod inserting holes of the rod breaking cutter body are mutually corresponding to the connecting rod inserting holes of the fixed base.
9. A bench breaker as claimed in any of claims 1 to 6 wherein, The desk type rod breaker further comprises a reset spring piece; And two ends of the reset elastic sheet are respectively connected with the fixed base and the broken rod cutter body.
10. A bench breaker as claimed in any of claims 1 to 6 wherein, The table rod breaker also comprises a base, wherein the base comprises a first supporting part, a second supporting part and a supporting table; The supporting table is connected with the second end part, close to the broken rod driving shaft, of the fixed base; The first supporting part and the second supporting part are respectively connected with one side of the supporting table, which is away from the fixed base, in a rotating way, and the first supporting part is movably connected with the second supporting part.

Description

Desk type rod breaker Technical Field The invention relates to the technical field of medical equipment, in particular to a table type rod breaker. Background In the existing orthopaedics operation, a plurality of implanted pedicle screws are required to be fixed into a whole by using a connecting rod, and the connecting rod can be adjusted to be of a proper length according to the actual requirement of the operation. In the related art, a broken rod is implemented on a connecting rod through a broken rod device, the broken rod device comprises a base, a broken rod shell and a broken rod mechanism, the broken rod shell and the broken rod mechanism are arranged on the base, the broken rod mechanism comprises a broken rod main body, a broken rod base, a reset elastic sheet and a broken rod driving shaft, the broken rod driving shaft is arranged on the broken rod shell, the broken rod process is that the whole broken rod device is directly placed on an operation table, one end of the connecting rod is inserted into a broken rod base and a connecting rod jack in the broken rod main body according to the outer diameter of the connecting rod, when the broken rod driving shaft rotates, one end of the broken rod main body rotates relative to the broken rod base, the inner end of the broken rod driving shaft can abut against the other end of the broken rod main body, the other end of the reset elastic sheet is in a downward-pressing state and continuously drives the broken rod driving shaft to rotate until part of the connecting rod in the broken rod jack of the broken rod main body is separated from part of the connecting rod in the broken rod base connecting rod jack, and the broken rod of the connecting rod is completed. The structure of the broken rod device has the following defects that firstly, the broken rod driving shaft is positioned at the top of the broken rod shell, the broken rod driving shaft is arranged on the broken rod shell in the vertical direction, the size of the broken rod mechanism is large, the operable space in the sterile area is very limited, the broken rod operation is very inconvenient, firstly, after the broken rod driving shaft is rotated, the inner end of the broken rod driving shaft is propped against the other end of the broken rod main body in a rotating and pressing mode, the reset elastic sheet is in a pressing state, and in the process of implementing broken rod by the connecting rod with relatively thick outer diameter, the rotating force of the broken rod driving shaft is required to be increased, and the broken rod can be broken only with great effort. Disclosure of Invention The invention provides a table type rod breaking device which is used for solving the defects of large volume and labor-consuming rod breaking of a rod breaking device in the prior art. The invention provides a bench type rod breaker which comprises a fixed base, a rod breaking cutter body and a rod breaking driving shaft, wherein the fixed base is provided with a driving tooth socket and a stop tooth socket, the rod breaking cutter body comprises a cutter body and a stop pawl, the cutter body is connected with the fixed base in a rotating way, the cutter body is provided with the stop pawl and a long chute, the stop pawl is matched with the stop tooth socket, one end of the long chute is close to the driving tooth socket, the other end of the long chute is far away from the driving tooth socket, the rod breaking cutter body and the fixed base are provided with a plurality of groups of connecting rod insertion holes which correspond to each other and have different apertures, the rod breaking driving shaft comprises a driving shaft body and a guiding device, the end part of the driving shaft body is provided with a driving gear, the driving gear is matched with the driving tooth socket, the guiding device is arranged at one end part of the driving shaft body, the other end of the driving shaft body can be close to or far away from the fixed base, the guiding device is movably connected with the long chute, and the guiding device can move along the extending direction of the long chute so that the driving tooth socket is meshed with or separated from the driving gear. The end part of the cutter body is movably connected with the stop pawl, the rod breaking cutter body further comprises a pawl reset assembly, the pawl reset assembly is respectively connected with the cutter body and the stop pawl, and the stop pawl is reset under the action of the pawl reset assembly under the condition that the stop pawl moves downwards along the extending direction of the stop tooth slot to be separated from the stop tooth slot. The invention provides a desk type rod breaker, wherein a pawl reset assembly comprises a reset spring and a spring fixing column, the spring fixing column is connected with one end of a cutter body, which is close to a stop tooth slot, the reset spring is sleeved on the spring fixing column, an