CN208573816U

CN208573816U - Single needle bone-holder

Info

Publication number: CN208573816U
Application number: CN201820188842.8U
Authority: CN
Inventors: 陈柏君
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-02-05
Filing date: 2018-02-05
Publication date: 2019-03-05
Anticipated expiration: 2028-02-05

Abstract

The utility model relates to the technical field of medical instrument, specifically a kind of single needle bone-holder.Including handle, hold spicule, the front end for holding spicule has the needle point of cone cell, through hole is had on the handle, the front end of through hole is fixedly connected with casing, it holds spicule to be inserted into through hole and casing, the front end of casing has external screw thread, holds on the needle point of spicule with thread tapping, the externally threaded hand of spiral and the hand of spiral of thread tapping are on the contrary, with for the fixed locking device for holding spicule on handle.Single needle bone-holder structure is simple, easy to use, direction is adaptable for this, can be used for clamping bony debris, and narrow space is suitble to use.

Description

Single needle bone-holder

Technical field

The utility model relates to the technical field of medical instrument, specifically a kind of single needle bone-holder.

Background technique

The surgical instrument of bone, limbs fracture fixed reset is clamped when bone-holder is for bone surgery.Existing bone-holder Claw hook or clamp-type structure are mostly used, if Chinese patent 2016201066871 discloses a kind of " bone-holder ", it is used Left and right gripper jaw forms jaw type gripper mechanism grips bone.Although this clamp-type bone-holder holding action is rapid, due to Gripper jaw is clamped in the edge of bone, biggish operating space is needed in operation, and since caliper and handle have directionality, hand The direction for adjusting in art and rotating bone is extremely difficult, it is sometimes desirable to which repeatedly changing hands can just be adjusted in place.In addition, can due to lacking Retaining part, this clamp-type bone-holder cannot be used for clamping bony debris.

Summary of the invention

That the purpose of the utility model is to provide a kind of structures is simple, easy to use, direction is adaptable, can be used for clamping bone The single needle bone-holder of bone fragment.

Used technical solution is the utility model in order to solve the technical problem:

Single needle bone-holder described in the utility model includes handle, holds spicule, and the front end for holding spicule has the needle point of cone cell, institute It states with through hole on handle, the front end of the through hole is fixedly connected with casing, holds spicule and be inserted into through hole and casing, The front end of casing has external screw thread, holds on the needle point of spicule with thread tapping, the externally threaded hand of spiral and thread tapping The hand of spiral is on the contrary, with for the fixed locking device for holding spicule on the handle.

On the outer wall of casing, externally threaded end be provided with annular boss.

The handle is column structure, and the through hole that spicule is held in inserting is located on the axis of handle, the locking device packet The positioning screw for including the location hole being arranged on handle side wall and being mounted in the location hole, diameter of the location hole along handle It is connected to through hole to extension, its inner end, internal screw thread is provided in the location hole and positioning screw is installed by the internal screw thread.

The handle is column structure, and the through hole that spicule is held in inserting is located on the axis of handle, the locking device packet Sliding block, the cam for including the location hole being arranged on handle side wall and being mounted in the location hole, the location hole is along handle It radially extends, its inner end connection through hole, the cam is rotatably installed in the outer end of location hole, the sliding block by wheel shaft It is slidably mounted on the inner end of location hole.

Due to having adopted above structure, single needle bone-holder structure is simple, easy to use, direction is adaptable for this, can be used for pressing from both sides Bony debris is held, narrow space is suitble to use.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model one embodiment.

Fig. 2 is the structural schematic diagram of handle and locking device in another embodiment.

Specific embodiment

As shown in Figure 1, single needle bone-holder described in the utility model includes handle 1, holds spicule 2, the front end for holding spicule 2 is had The needle point of cone cell has through hole on the handle 1, and the front end of the through hole is fixedly connected with casing 3, the end of casing 3 The inner cavity for being fixedly connected on the front end of handle 1 and casing 3 is connected to and is located along the same line with through hole, holds the inserting of spicule 2 In through hole and casing 3, through hole extends through the handle 1 outside for alloing the rear end for holding spicule 2 to reach through hole, casing 3 Front end has external screw thread 4, holds on the needle point of spicule 2 with thread tapping 5, the hand of spiral of the external screw thread 4 and the spiral shell of thread tapping 5 Revolve it is contrary, with for the fixed locking device for holding spicule 2 on the handle 1.As shown in Figure 1, in use, first to It clamps and drills on the proximal end bone wall 11 of bone, the diameter in hole should be able to pass through the outer diameter held spicule 2 but be less than casing 3, will then hold The front end of spicule 2 is injected in the hole on proximal end bone wall 11, and needle point is lunged distal bone wall 12, and rotation holds spicule 2 and passes through self tapping Silk makes the needle point precession distal bone wall 12 for holding spicule 2；Then casing 3 is packed into the tail end for holding spicule 2, sliding sleeve 3 is until it The external screw thread 4 of front end touches proximal end bone wall 11, the hole for pressing handle 1 and rotating, being screwed into external screw thread 4 on proximal end bone wall 11 In, by handle 1 and the locking of spicule 2 is held finally by locking device.In addition, it is screwed into proximal end bone wall 11 for convenience of external screw thread 4, , can also be using reamer by the appropriate reaming in hole on proximal end bone wall 11 after drilling on proximal end bone wall 11, or use silk Attack the internal thread of matching silk external screw thread 4.After spicule 2 is held in locking, casing 3 and the relative position i.e. fixation for holding spicule 2 can not Sliding, is equivalent to the position that bone to be held is secured using the two fixing points of external screw thread 4 and thread tapping 5, in addition, due to outer spiral shell The hand of spiral of line 4 and thread tapping 5 is less likely to occur to be displaced and rotate, firm grip on the contrary, locking bone to be held later, and can It is easy to use in operation easily to adjust hand-held angle.

As a further improvement of the utility model, on the outer wall of casing 3, the end of external screw thread 4 be provided with it is cyclic annular convex Platform 7.After external screw thread 4 is screwed into the hole of proximal end bone wall 11, the outer wall of annular boss 7 and proximal end bone wall 11 forms clamping engagement, Keep casing 3 and the cooperation of proximal end bone wall 11 even closer.

In Fig. 1 embodiment, the handle 1 is column structure, and the through hole that spicule 2 is held in inserting is located at the axis of handle 1 On, the locking device includes the location hole being arranged on 1 side wall of handle and the positioning screw 6 being mounted in the location hole, The location hole is provided with internal screw thread along the radially extending of handle 1, its inner end connection through hole, the location hole and by should Internal screw thread installs positioning screw 6.When screwing out positioning screw 6 outward, holding spicule 2 can be free to slide in through hole.Lock Periodically, it as long as inside precession positioning screw 6, compresses the inner end of positioning screw 6 and holds spicule 2, the position that can will hold spicule 2 is locked It is fixed.For convenience of rotational positioning screw rod 6, two symmetrically arranged blades are fixedly connected in the outer end of positioning screw 6, rotate leaf by hand Piece can drive positioning screw 6 to rotate.

In Fig. 2 embodiment, the handle 1 is column structure, and the through hole that spicule 2 is held in inserting is located at the axis of handle 1 On, the locking device includes the location hole being arranged on 1 side wall of handle and the sliding block 8, the cam that are mounted in the location hole 9, the location hole is rotatably mounted along the radially extending of handle 1, its inner end connection through hole, the cam 9 by wheel shaft In the outer end of location hole, the sliding block 8 is slidably mounted on the inner end of location hole.The section of sliding block 8 can be circle, be also possible to Square, the inner face of sliding block 8 is with the arc groove of matching 2 side wall of spicule, and the outer end face of sliding block 8 is with matching cam 9 Groove makes sliding block 8 be controlled by cam 9, and cam 9 is cylindrical-shaped structure, and the wheel shaft at 9 both ends of cam is located at the bias of its circular end face Position, wheel shaft are rotatably mounted on the side wall of location hole, and the axis of cam 9 and wheel shaft is all perpendicular to through hole, on cam 9 It is fixedly connected with spanner 10.In use, moving wrench 10 can be such that cam 9 rotates, the movement of sliding block 8 is pushed by cam 9, is formed Extruding to spicule 2 is held in through hole, the extruding of sliding block 8 can will hold spicule 2 when holding spicule 2 and lock, and on the contrary then release is held Spicule 2 allows to move freely.

Claims

1. single needle bone-holder, including handle (1), spicule (2) are held, the front end for holding spicule (2) has the needle point of cone cell, and feature exists In: through hole is had on the handle (1), the front end of the through hole is fixedly connected with casing (3), holds spicule (2) and be inserted into In through hole and casing (3), the front end of casing (3) has external screw thread (4), holds and has thread tapping (5) on the needle point of spicule (2), The hand of spiral of the external screw thread (4) is held on the contrary, having on the handle (1) for fixation with the hand of spiral of thread tapping (5) The locking device of spicule (2).

2. single needle bone-holder according to claim 1, it is characterised in that: the handle (1) is column structure, and bone is held in inserting The through hole of needle (2) is located on the axis of handle (1), and the locking device includes the location hole being arranged on handle (1) side wall And it is mounted on the positioning screw (6) in the location hole, the location hole is passed through along the radially extending of handle (1), the connection of its inner end It perforates, internal screw thread is provided in the location hole and by internal screw thread installation positioning screw (6).