CN211325537U

CN211325537U - A take sheath screwdriver for bone surgery

Info

Publication number: CN211325537U
Application number: CN201922098500.4U
Authority: CN
Inventors: 魏会民; 赵光辉; 陈继光
Original assignee: Anyang Shengjie Technology Co ltd
Current assignee: Anyang Shengjie Technology Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-08-25
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a screwdriver with a sheath for orthopedic surgery, which comprises a handle, a screwdriver rod and a holding sheath; one end of the tapered rod is inserted into the center of the handle and is fixedly connected with the handle through a pin, and a holding sheath is sleeved outside the other end of the tapered rod; the clamping sheath is of a hollow structure, one end of the clamping sheath is provided with a bell mouth, the bell mouth faces the handle, and the clamping sheath on one side of the bell mouth is provided with a long slot hole; the other end of the clamping sheath is a nut clamping end, two clamping arms are symmetrically arranged on the nut clamping end, a conical clamping groove is formed in the tail end of each clamping arm, and the clamping arms are flush with the tool bit of the taper rod. The utility model can conveniently hold the screw, simplify the operation and reduce the operation time.

Description

A take sheath screwdriver for bone surgery

Technical Field

The utility model relates to a screwdriver with a sheath for orthopedic surgery, which belongs to the technical field of surgical medical instruments.

Background

More screws are often used in general orthopedic surgery to fix the connection between the holder and the bone, for example, steel plate screw internal fixation adopts a steel plate and a screw to be matched for the treatment of long-tube bone fracture; the anterior cervical internal fixation adopts a steel plate body and cone screws, and two cone screws are used for fixedly connecting the steel plate body with the upper cone body of two adjacent cones at the operation position and fixedly connecting the two cone screws with the lower cone body during the operation. The installation and removal of screws typically uses a screwdriver as a tool, the head of which is inserted into a recess in the nut to screw the screw in or out. In the process of installing the screw in an operation, in order to accurately align the installation hole position, the screw needs to be stably held by hands so as to ensure that the screw is not deviated; however, in order to reduce the risk of operation and the pain of the patient during the operation, the operation opening needs to be reduced as much as possible, which directly results in a narrow operation space and is not beneficial to the operation of the doctor. Therefore, a screwdriver which can conveniently hold the screw is needed, thereby facilitating the operation and reducing the operation time.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model provides a take sheath screwdriver for bone surgery solves the screwdriver and adds the inconvenient problem of holding to the screw.

The technical scheme of the utility model is that: a screwdriver with a sheath for orthopedic surgery comprises a handle, a screwdriver rod and a holding sheath; one end of the tapered rod is inserted into the center of the handle and is fixedly connected with the handle through a pin, and a holding sheath is sleeved outside the other end of the tapered rod; the clamping sheath is of a hollow structure, one end of the clamping sheath is provided with a bell mouth, the bell mouth faces the handle, the other end of the clamping sheath is a nut clamping end, and the nut clamping end is flush with a tool bit of the taper rod; a long slot hole is formed in the holding sheath on one side of the bell mouth; the clamping sheath at one side of the clamping end of the nut is symmetrically milled flat along the direction parallel to the plane of the long slotted hole to form two clamping arms, and the tail ends of the clamping arms are provided with conical clamping grooves.

Furthermore, the shape of the tool bit of the taper rod is any one of a straight line shape, a cross shape, a quincunx shape, a hexagon shape and the like, and the tool bit is matched with the structure of an inner groove of a screw nut connected with the tool bit.

Further, an arc-shaped groove structure is further arranged on the handle.

The utility model has the advantages that: a specially designed clamping sheath is arranged on the taper rod, and the horn mouth is convenient for the installation of the sheath; the clamping sheath has elastic contraction force through the long slotted hole formed at one end of the horn mouth of the clamping sheath, so that the tapered rod can be clamped; simultaneously, the screw cap is utilized to add the inward elastic contraction force of the two adding holding arms at the holding end, so that the screw and the screw cap can be conveniently placed in the conical clamping groove to form effective holding of the screw, the operation is convenient, the operation time is shortened, the operation risk is further reduced, and the pain of a patient is reduced.

Drawings

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

Fig. 2 is a schematic view of a structure of a holding sheath.

Fig. 3 is a view taken along direction a in fig. 1.

The labels in the figure are: 1 handle, 2 tapered rods, 3 clamping sheaths, 11 arc-shaped grooves, 21 tool bits, 22 pins, 31 bell mouths, 32 long slotted holes, 33 clamping arms and 331 tapered clamping grooves.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1-2, a sheathed screwdriver for orthopedic surgery comprises a handle 1, a screwdriver rod 2 and a clamping sheath 3; the handle 1 is provided with an arc-shaped groove structure 11, so that the handle is convenient to hold in an operation and fix in storage; one end of the screwdriver rod 2 is inserted into the center of the handle 1 and is fixedly connected with the handle through a pin 22, and a holding sheath 3 is sleeved outside the other end of the screwdriver rod 2; the clamping sheath 3 is of a hollow structure, one end of the clamping sheath is provided with a bell mouth 31, the arrangement of the bell mouth is convenient for the installation of the sheath, the bell mouth 31 faces the handle 1, the other end of the clamping sheath is a nut clamping end, the nut clamping end is flush with the tool bit 21 of the taper rod, the shape of the knife 21 of the taper rod is any one of a straight line shape, a cross shape, a quincunx shape, a hexagon shape and the like, and the knife is matched with a connected screw nut inner groove structure, in the embodiment, the hexagon is selected as shown in figure 3; the holding sheath at one side of the bell mouth is provided with a long slotted hole 32, and the end part of the holding sheath has elastic contraction force due to the long slotted hole, so that the taper rod can be clamped; the clamping sheath on one side of the nut clamping end is symmetrically milled flatly along the direction parallel to the plane of the slotted hole to form two clamping arms 33, the tail ends of the clamping arms 33 are provided with conical clamping grooves 331, the clamping arms 33 have inward elastic contraction force, and therefore screws and nuts can be conveniently placed in the conical clamping grooves 331 to form effective clamping of the screws.

When the screw is required to be taken in an operation, the handle is held by hand, the screw cap in the screw box is aligned to the screw cap holding end, pressure is applied vertically, the screw cap is of a conical structure, the screw cap presses the holding arm to be opened, the screw cap is clamped in the conical clamping groove, the holding arm contracts to clamp the screw cap, the tool bit of the screw rod is also embedded into the groove of the screw cap at the moment, the screw and the screwdriver form an integral body, the direction of the screw is not required to be independently controlled, the screw can be screwed, after the screw is fastened, the handle is forced backwards, the holding arm is opened, and the screw cap is separated from the screw rod. Therefore, the utility model can facilitate the operation, reduce the operation time, further reduce the operation risk and reduce the pain of the patient.

Claims

1. A screwdriver with sheath for orthopedic surgery is characterized in that: comprises a handle, a screwdriver rod and a holding sheath; one end of the tapered rod is inserted into the center of the handle and is fixedly connected with the handle through a pin, and a holding sheath is sleeved outside the other end of the tapered rod; the clamping sheath is of a hollow structure, one end of the clamping sheath is provided with a bell mouth, the bell mouth faces the handle, and the clamping sheath on one side of the bell mouth is provided with a long slot hole; the other end of the clamping sheath is a nut clamping end, two clamping arms are symmetrically arranged on the nut clamping end, a conical clamping groove is formed in the tail end of each clamping arm, and the clamping arms are flush with the tool bit of the taper rod.

2. A sheathed screwdriver according to claim 1, characterized in that: the shape of the tool bit of the taper rod is any one of a straight line shape, a cross shape, a quincunx shape, a hexagon shape and the like, and the tool bit is matched with the structure of an inner groove of a screw nut connected with the taper rod.

3. A sheathed screwdriver according to claim 1, characterized in that: the handle is also provided with an arc groove structure.