CN203388927U

CN203388927U - Joint surgery grinding knife

Info

Publication number: CN203388927U
Application number: CN201320455518.5U
Authority: CN
Inventors: 郭毅军; 柳长风
Original assignee: CHONGQING XISHAN TECHNOLOGY Co Ltd
Current assignee: Chongqing Xishan Science and Technology Co Ltd
Priority date: 2013-07-29
Filing date: 2013-07-29
Publication date: 2014-01-15
Anticipated expiration: 2023-07-29

Abstract

The utility model discloses a joint surgery grinding knife which comprises a grinding head, an outer knife pipe and an inner knife pipe sleeved in the outer knife pipe in a mode of rotating around the axis of itself. The grinding head is arranged at the front end of the inner knife pipe and matched with the inner knife pipe in a transmission mode. By means of the structure that the inner knife pipe and the outer knife pipe are sleeved and the grinding head is driven by the inner knife pipe, a reasonable matching gap can be set, grinding head operation is restrained reasonably in the radial direction, clamping stagnation and large vibration can not happen during use, and lesion tissues and redundant tissues of joints can be ground thoroughly, smoothly and correctly during use. Side damage is reduced, cutting efficiency in a surgical process is improved, post-operation recovery period is shortened, pain of patients is reduced, and treatment cost is reduced. The joint surgery grinding knife can adopt grinding heads of different blade shapes and diameters and meet surgical requirements of different portions of the joints.

Description

Joint surgery grinding cutter

Technical field

This utility model relates to a kind of medical apparatus and instruments, particularly the joint surgery grinding cutter for organizing finishing and excising in a kind of joint surgery.

Background technology

In carrying out the operation of joint tissue excision, need to pass through scalpel removal lesion tissue or unnecessary tissue; In existing operation process, general employing by rongeur removed osseous tissue and uses joint drill bit, and the former efficiency is lower, and rongeur is due to operator's technical merit reason, can cause secondary damage, affects the restore cycle after cure rate and lengthening; During joint drill bit movement, vibration is large, and grinding position is inaccurate, and because revolute pair matched in clearance is unreasonable, the easy clamping stagnation of operation process, and impact operation efficiency also affects the recovery of wound, increases treatment cost when increasing patient painful.

Therefore, need a kind of joint surgery Knife for stripping cable, during use, can there is not clamping stagnation and larger vibration, can be thorough, smooth and easy during use and grinding accurately except pathological tissues and the unnecessary tissue in joint, improve the efficiency of operation process, restore cycle after desmopyknosis, when alleviating patient painful, reduce treatment cost.

Utility model content

In view of this, this utility model provides a kind of joint surgery grinding cutter, during use, can there is not clamping stagnation and larger vibration, can be thorough, smooth and easy during use and grinding accurately except pathological tissues and the unnecessary tissue in joint, improve the efficiency of operation process, restore cycle after desmopyknosis, when alleviating patient painful, reduce treatment cost.

Joint surgery grinding cutter of the present utility model, comprises bistrique, outer cutter pipe and being placed on the interior cutter pipe of outer cutter pipe in the mode that self axis rotates, described bistrique is positioned at cutter pipe front end and coordinates with the transmission of cutter pipe.

Further, described bistrique is provided with bistrique cervical region and coordinates with the transmission of interior cutter pipe by bistrique cervical region, and described bistrique cervical region periphery is coaxially supported in the inner circle of outer cutter pipe;

The gap further, between described bistrique cervical region periphery and the inner circle of outer cutter pipe with 0.01-0.06mm;

Further, described bistrique cervical region periphery at least scribbles wear-resistant coating in the inner circle cooperation place with outer cutter pipe;

Further, described bistrique is provided with suction socket, and this suction socket is communicated with interior cutter pipe and jointly forms suction channel with interior cutter pipe;

Further, described outer cutter tube portion tube wall extends to form forward bistrique and protects sheath, and grinding sword outer rim and the bistrique of bistrique protect the gap between sheath inner surface with 0.1-0.5mm;

The gap further, between described interior cutter pipe cylindrical and outer cutter pipe inner circle with 0.1-1mm;

Further, the gap between described bistrique cervical region periphery and the inner circle of outer cutter pipe is 0.02-0.03mm;

Further, to protect the gap between sheath inner surface be 0.2-0.4mm for the grinding sword outer rim of described bistrique and bistrique;

Further, the suction socket of described bistrique is located at bistrique cervical region.

The beneficial effects of the utility model: joint surgery grinding cutter of the present utility model, adopt the structure of cutter pipe driving bistrique in inside and outside cutter pipe box merga pass, can set rational fit clearance, make operating in of bistrique radially be subject to rational constraint, during use, can there is not clamping stagnation and larger vibration, can be thorough during use, smooth and easy and grinding accurately removes pathological tissues and the unnecessary tissue in joint, during use, reduce secondary damage, improve the excision efficiency of operation process, restore cycle after desmopyknosis, when alleviating patient painful, reduce treatment cost, this utility model can adopt different tooth shapes and the bistrique of diameter, meet the operation demand of joint different parts.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, this utility model is further described.

Fig. 1 is structural representation of the present utility model.

The specific embodiment

Fig. 1 is structural representation of the present utility model, as shown in the figure: the joint surgery grinding cutter of the present embodiment, comprise bistrique 1, outer cutter pipe 2 and can be placed on the interior cutter pipe 3 of outer cutter pipe 2 in the mode that self axis rotates, described bistrique 1 is positioned at cutter pipe 3 front ends and coordinates with the transmission of cutter pipe, adopt the structure of cutter pipe 3 driving bistriques in inside and outside cutter pipe box merga pass, make operating in of bistrique radially be subject to rational constraint, reduce vibration and clamping stagnation; The transmission fit system of interior cutter pipe and bistrique can adopt any mechanical transmission structure of prior art, does not repeat them here.

In the present embodiment, described bistrique 1 is provided with bistrique cervical region 11 and coordinates with interior cutter pipe 3 transmissions by bistrique cervical region 11, and described bistrique cervical region periphery is coaxially supported in the inner circle of outer cutter pipe 2; Utilize the supporting role of bistrique cervical region 11, further reduce operational shock, and guarantee the balance of running, avoid clamping stagnation, improve operation efficiency.

In the present embodiment, between described bistrique cervical region 11 peripheries and the inner circle of outer cutter pipe 2, there is the gap of 0.01-0.06mm; This interstice coverage can guarantee that the revolute pair forming between bistrique cervical region 11 peripheries and the inner circle of outer cutter pipe 2 is without clamping stagnation and low vibration operation.

In the present embodiment, described bistrique cervical region 11 peripheries at least scribble wear-resistant coating in the inner circle cooperation place with outer cutter pipe 3; Wear-resistant coating can adopt chromed hardened mode, certainly, also can adopt other hard, wear-resistant structure; Also can adopt the wearing layer with self-lubricating function, bonding to avoid bistrique cervical region and outer cutter pipe to occur.

In the present embodiment, described bistrique 1 is provided with suction socket 4, and this suction socket 4 is communicated with interior cutter pipe 2 and jointly forms suction channel 5 with interior cutter pipe 2; Coordinate suction power, utilize suction force, realize and cut and discharge chip, make operating field clear, the feature that has accurate location and accurately excise, the restore cycle after desmopyknosis, reduces treatment cost when alleviating patient painful.

In the present embodiment, described outer cutter pipe 2 part tube walls extend to form forward bistrique and protect sheath 21, and the grinding sword outer rim of bistrique 1 and bistrique protect the gap a between sheath inner surface with 0.1-0.5mm; The ，Gai gap a that avoids splashing is greater than above-mentioned scope can make bistrique diameter reduce, thereby reduces grinding efficiency; Gap is less than above-mentioned scope, may protect sheath with bistrique at work and interfere, and affects operation process.

In the present embodiment, between described interior cutter pipe 3 cylindricals and outer cutter pipe 2 inner circles, there is the gap of 0.1-1mm; Gap is less than above-mentioned scope can produce larger frictional force, thereby abnormal sound and heating occur, and gap is greater than above-mentioned scope can produce larger vibration.

In the present embodiment, the gap between described bistrique cervical region 11 peripheries and the inner circle of outer cutter pipe 2 is 0.02-0.03mm; The present embodiment value is 0.025mm, and comparatively suitable clearance range more can and make cutter reach best running status by clamping stagnation and vibration integrated consideration, to guarantee carrying out smoothly of operation process.

In the present embodiment, the gap a that the grinding sword outer rim of described bistrique 1 and bistrique protect between sheath inner surface is 0.2-0.4mm, in the present embodiment, and value 0.3.

In the present embodiment, the suction socket of described bistrique 1 is located at bistrique cervical region 11, and as shown in the figure, bistrique cervical region 11 forms a necking down conical surface, and suction socket 4 is positioned on this conical surface by suction channel 5 self-assembling formations, simple in structure, aspirates smooth and easy.

Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although this utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.

Claims

1. a joint surgery grinding cutter, is characterized in that: comprise bistrique, outer cutter pipe and being placed on the interior cutter pipe of outer cutter pipe in the mode that self axis rotates, described bistrique is positioned at cutter pipe front end and coordinates with the transmission of cutter pipe.

2. joint surgery grinding cutter according to claim 1, is characterized in that: described bistrique is provided with bistrique cervical region and coordinates with the transmission of interior cutter pipe by bistrique cervical region, and described bistrique cervical region periphery is coaxially supported in the inner circle of outer cutter pipe.

3. joint surgery grinding cutter according to claim 2, is characterized in that: the gap between described bistrique cervical region periphery and the inner circle of outer cutter pipe with 0.01-0.06mm.

4. joint surgery grinding cutter according to claim 2, is characterized in that: described bistrique cervical region periphery at least scribbles wear-resistant coating in the inner circle cooperation place with outer cutter pipe.

5. joint surgery grinding cutter according to claim 2, is characterized in that: described bistrique is provided with suction socket, and this suction socket is communicated with interior cutter pipe and jointly forms suction channel with interior cutter pipe.

6. joint surgery grinding cutter according to claim 1, is characterized in that: described outer cutter tube portion tube wall extends to form forward bistrique and protects sheath, and grinding sword outer rim and the bistrique of bistrique protect the gap between sheath inner surface with 0.1-0.5mm.

7. joint surgery grinding cutter according to claim 1, is characterized in that: the gap between described interior cutter pipe cylindrical and outer cutter pipe inner circle with 0.1-1mm.

8. joint surgery grinding cutter according to claim 3, is characterized in that: the gap between described bistrique cervical region periphery and the inner circle of outer cutter pipe is 0.02-0.03mm.

9. joint surgery grinding cutter according to claim 6, is characterized in that: the gap that the grinding sword outer rim of described bistrique and bistrique protect between sheath inner surface is 0.2-0.4mm.

10. joint surgery grinding cutter according to claim 5, is characterized in that: the suction socket of described bistrique is located at bistrique cervical region.