CN105708517A - Hollow trephine provided with push rod - Google Patents

Abstract

The invention discloses a hollow trephine with a push rod, which comprises a hollow trephine body and a push rod; the hollow trephine body includes a trephine bit, a connecting rod and a cross bar, the trephine bit is cylindrical, and one end of the trephine bit passes through the connecting rod It is fixedly connected with the cross bar, the cross bar is perpendicular to the ring drill bit and the connecting rod, the other end of the ring drill bit has a round hole, the axis of the round hole coincides with the axis position of the ring drill bit, and the outer wall of the ring drill bit has a hole in the direction of the ring bit axis. There is a strip hole, and the end of the ring drill bit where the round hole is located is provided with serrations; the push rod is cylindrical, and the push rod is slidably set in the round hole; the end of the push rod near the cross bar is provided with a push block, and the bar groove An end close to the cross bar is provided with a card slot on the long side wall, and the push block can be locked in the card slot. Through the above method, the present invention can conveniently remove the bone column stuck in the hollow trephine to shorten the operation time and reduce the risk of anesthesia. It can also be stuck on the upper part of the hollow trephine when not in use, without affecting the normal operation of the hollow trephine. use.

Description

Hollow Trephine with Push Rod

technical field

The invention relates to the field of medical instruments, in particular to a hollow trephine with a push rod.

Background technique

Clinically, patients with fractures, especially those with bone defects, usually need bone grafting. At present, the clinically used bone extraction instruments are mainly osteotome and hollow trephine. Osteotomy requires a large incision during the bone harvesting process, mainly taking cortical bone, which destroys the shape of the donor site. Hollow trephine can drill cancellous bone, the required incision is small, the trauma is small, and the cancellous bone taken out is more conducive to bone resorption and utilization. The bone column is removed through the trephine, which prolongs the operation time and increases the risk of anesthesia.

Contents of the invention

The technical problem mainly solved by the present invention is to provide a hollow trephine with a push rod, which can conveniently remove the bone column stuck in the hollow trephine to shorten the operation time and reduce the risk of anesthesia. The upper part of the hollow trephine does not affect the normal use of the hollow trephine; the structure is simple and the use is convenient.

In order to solve the above technical problems, a technical solution adopted by the present invention is: provide a hollow trephine with a push rod, including a hollow trephine body and a push rod; the hollow trephine body includes a trephine bit, a connecting rod and a cross bar , the ring drill bit is cylindrical, one end of the ring drill bit is fixedly connected with the cross bar through the connecting rod, the cross bar is perpendicular to the ring drill bit and the connecting rod, the other end of the ring drill bit has a round hole, the axis of the round hole is in line with the axis position of the ring drill bit Coincidentally, the outer wall of the ring drill bit is provided with a strip hole in the direction of the ring drill axis, and the end of the ring drill bit where the round hole is located is provided with serrations; it is characterized in that: the push rod is cylindrical, and the push rod is slidably arranged in the round hole Inside: a push block is provided on the outer wall of the push rod close to the cross bar, and a slot is formed on the long side wall of the strip groove near the end of the cross bar, and the push block can be stuck in the slot.

Preferably, the push block includes a block and a connection block, the block is fixed on the push rod through the connection block, and the connection block can be stuck in the slot.

Preferably, both the push rod and the push block are made of stainless steel.

The beneficial effects of the present invention are: the present invention can conveniently take out the bone column stuck in the hollow trephine, so as to shorten the operation time and reduce the risk of anesthesia; normal use of the drill.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of a preferred embodiment of a hollow trephine with a push rod of the present invention;

Fig. 2 is a three-dimensional structure schematic diagram of a hollow trephine with a push rod in use according to the present invention.

The marks of each part in the accompanying drawings are as follows: 1, drill bit; 2, connecting rod; 3, cross bar; 4, push rod; 5, push block.

detailed description

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

Please refer to Fig. 1 and Fig. 2, the embodiment of the present invention comprises:

A hollow trephine with a push rod, comprising a hollow trephine body and a push rod 4; the hollow trephine body includes a trephine bit 1, a connecting rod 2 and a cross bar 3, the trephine bit 1 is cylindrical, and the trephine bit 1 One end is fixedly connected with the cross bar 3 through the connecting rod 2, the cross bar 3 is perpendicular to the ring bit 1 and the connecting rod 2, the other end of the ring bit 1 has a round hole, the axis of the round hole coincides with the axis position of the ring bit 1, and the ring The outer wall of the drill bit 1 is provided with a strip-shaped hole in the axial direction of the ring drill bit 1, and the end where the round hole is located on the ring drill bit 1 is provided with serrations; it is characterized in that: the push rod 4 is cylindrical, and the push rod 4 is slidably arranged on the In the round hole; on the outer wall of the push rod 4 near the end of the cross bar 3 is provided with a push block 5, on the long side wall of the strip groove near the end of the cross bar 3 has a card slot, the push block 5 can be stuck in card slot. Both the push rod 4 and the push block 5 are made of stainless steel, which can be easily washed without worrying about rusting and affecting the use. The push block 4 includes a block and a connection block, the block is fixed on the push rod 4 through the connection block, the connection block can be stuck in the slot, and the connection block is limited to the clamp by the block and the push rod 4 In the groove, in order to realize blocking push rod 4, make push rod 4 be fixed on the top of trephine bit. When in use, turn the push block 5 so that the push block 5 is no longer stuck on the card slot, and push the push block 5, the push rod 4 moves along the axis direction of the ring drill 1, and pushes out the bone column stuck in the ring drill 1; When not in use, push the push block 5 to the upper part of the ring drill bit and turn the push block 5 to clamp the push block 5 on the slot, and fix the push rod 4 on the upper part of the ring drill bit 1 through the push block 5 .

The present invention can conveniently remove the bone column stuck in the hollow trephine to shorten the operation time and reduce the risk of anesthesia, and can also be stuck on the upper part of the hollow trephine when not in use, without affecting the normal use of the hollow trephine; its structure Simple and easy to use.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, all of which are equally included in the scope of patent protection of the present invention.

Claims (3)

1. A hollow trephine with a push rod, comprising a hollow trephine body and a push rod; the hollow trephine body comprises a trephine bit, a connecting rod and a cross bar, the trephine is cylindrical, and one end of the trephine passes through the connecting rod It is fixedly connected with the cross bar, the cross bar is perpendicular to the ring bit and the connecting rod, the other end of the ring drill has a round hole, the axis of the round hole coincides with the axis position of the ring drill, and the outer wall of the ring drill has a hole in the direction of the ring drill axis. A strip-shaped hole, the end of the circular hole on the ring bit is provided with serrations; the feature is that: the push rod is cylindrical, and the push rod is slidably arranged in the circular hole; the end of the push rod near the cross bar is set There is a push block, and the long side wall of the bar-shaped groove is provided with a draw-in slot near the end of the cross bar, and the push block can be stuck in the draw-in slot. 2. A hollow trephine with a push rod according to claim 1, wherein the push block includes a block and a connecting block, the block is fixed on the push rod through the connecting block, and the connecting block can be stuck in the card slot. 3. A hollow trephine with a push rod according to claim 1, characterized in that: the push rod and the push block are made of stainless steel.