CN211862894U

CN211862894U - Sternum saw under thoracoscope

Info

Publication number: CN211862894U
Application number: CN202020222466.7U
Authority: CN
Inventors: 田单; 谢亮; 林少敏
Original assignee: Guangdong General Hospital Guangdong Academy of Medical Sciences
Current assignee: Guangdong General Hospital Guangdong Academy of Medical Sciences
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-11-06
Anticipated expiration: 2030-02-27

Abstract

The utility model discloses a sternum saw under thoracoscope, including holding pole, arc connecting rod and straight-bar, be equipped with the chamber of accomodating that is used for placing the saw head at the front end of straight-bar, the lower extreme of saw head is fixed with the roof, and the outside cover at the saw head is equipped with the rectangle spring, the both ends of rectangle spring are tightly pushed up respectively between the up end of roof and the roof of accomodating the chamber, have seted up the holding chamber bottom the lateral wall of accomodating chamber towards arc connecting rod one side, the kicking block that is used for ejecting saw head has been placed to the holding intracavity, has interleaved the elastic rod in the inside slip of holding pole and arc connecting rod, the elastic rod is fixed on the rear end face of kicking block, behind the slotted hole and ejector pad fixed connection are worn out to the afterbody of elastic. The utility model discloses can accomplish the operation under the full thoracoscope, when effectively cutting off the breastbone back plate, do not harm blood vessel, nerve and important internal organs in the thorax, it is easy and simple to handle, safe effective.

Description

Sternum saw under thoracoscope

Technical Field

The utility model relates to a sternum back plate cuts off technical field, specifically is a sternum saw under thoracoscope.

Background

Currently, NUSS operation is a recognized standard correction method for treating funnel chest, but for adult severe funnel chest patients, due to bone stiffness, the postoperative correction effect of part of patients is unsatisfactory, and postoperative pain is strong. For partial severe adult funnel chest patients, an auxiliary incision needs to be made under the xiphoid process, the sternum back plate is partially cut off, and the reverse stress is reduced, but the operation mode has large trauma and strong postoperative pain of the patients, and a sternum sawing device under a thoracoscope is not clinically available at present.

The existing technology can not complete the sternal posterior sternotomy under the full thoracoscope, and needs to be assisted by making an auxiliary incision under the xiphoid process, but the method additionally increases the trauma of the patient, increases the postoperative pain of the patient, and prolongs the postoperative recovery time of the patient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sternum saw under thoracoscope can accomplish the operation under the full thoracoscope, when effectively cutting off the breastbone back plate, does not harm blood vessel in the thorax, nerve and important internal organs, and is easy and simple to handle, safe effective.

In order to achieve the above object, the utility model provides a following technical scheme: a sternum saw under a thoracoscope comprises a holding rod, an arc-shaped connecting rod and a straight rod which are integrally formed, wherein a containing cavity is formed on the inner side wall of the front end of the straight rod in a downward concave mode, a saw head is placed in the containing cavity, a top plate is fixed at the lower end of the saw head and is connected in the containing cavity in a sliding mode, a sawtooth surface of the saw head penetrates out of an opening of the containing cavity, a rectangular spring is sleeved outside the saw head, two ends of the rectangular spring are respectively tightly propped between the upper end surface of the top plate and the top wall of the containing cavity, an containing cavity is formed in the bottom of the side wall of the containing cavity, which faces one side of the arc-shaped connecting rod, of the containing cavity, a jacking block used for jacking out the saw head is placed in the containing cavity, the holding rod and the arc-shaped connecting rod are hollow rods and are communicated with the insides of the holding rod, the front end of the elastic rod penetrates into the accommodating cavity and is fixed on the rear end face of the ejector block, sliding groove holes distributed along the axis of the holding rod are formed in the side wall of the tail of the holding rod, the sliding groove holes are communicated with the inside of the holding rod, and the tail of the elastic rod is bent to 90 degrees and penetrates through the sliding groove holes to be fixedly connected with the push block.

Preferably, the upper surface of the front end of the top block is a wedge-shaped surface, and the lower surface of the rear end of the top plate is a wedge-shaped surface matched with the top plate.

Preferably, the outer side walls of the holding rod, the arc-shaped connecting rod and the straight rod are all polished through blunt polishing.

Preferably, the elastic rod is an elastic steel rod.

Preferably, the total height of the saw head and the top plate is smaller than the height of the receiving cavity.

Preferably, the arc of the arc connecting rod conforms to the profile of the sternum.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model can prevent the surrounding tissues and blood vessels from being damaged in the operation process by arranging the saw head which can be accommodated; the operating handle is designed according to the shape of the thorax, and the front part of the operating handle is arc-shaped, so that a person can be placed into the sternum saw through a lateral chest wall incision in an operation to effectively reach the back of the sternum; except that the front end saw head of the whole device is of a sharp structure, all parts are designed to be blunt, the operation is carried out under the monitoring of the thoracoscope, and the auxiliary damage is effectively avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the front end of the saw head of the present invention when extended;

FIG. 3 is a schematic view of the position of the push block when the saw head is extended;

fig. 4 is a sectional view of the front end saw head of the present invention when it is stored;

FIG. 5 is a schematic view of the position of the pushing block when the saw head is stored;

FIG. 6 is a schematic view of a rectangular spring;

in the figure: 1-holding rod, 2-arc connecting rod, 3-straight rod, 4-saw head, 5-pushing block, 6-containing cavity, 7-top plate, 8-rectangular spring, 9-containing cavity, 10-elastic rod, 11-top block and 12-sliding slot hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a sternum saw under thoracoscope, which comprises a holding rod 1, an arc connecting rod 2, and a straight rod 3, wherein the holding rod 1, the arc connecting rod 2, and the straight rod 3 are integrally formed.

Sunken formation on the front end inside wall of this straight-bar 3 accomodates chamber 6, accomodate and to have placed saw head 4 in the chamber 6, the lower extreme of saw head 4 is fixed with roof 7, roof 7 sliding connection is in accomodating chamber 6, the opening of accomodating chamber 6 is worn out to the sawtooth surface of saw head 4, is equipped with rectangle spring 8 at the outside cover of saw head 4, the both ends of rectangle spring 8 are tight between the up end of roof 7 and the roof of accomodating chamber 6 in top respectively, has seted up holding chamber 9 at the lateral wall bottom of accomodating chamber 6 towards arc connecting rod 2 one side, place the kicking block 11 that is used for ejecting saw head 4 in the holding chamber 9, the front end upper surface of kicking block 11 is the wedge face, the rear end lower surface of roof 7 is rather than complex wedge face.

This holding rod 1 and arc connecting rod 2 are cavity pole, and its inside intercommunication, have elastic rod 10 at the inside slip interlude of holding rod 1 and arc connecting rod 2, the front end of elastic rod 10 penetrates in holding chamber 9 and fixes on the rear end face of kicking block 11, set up on the afterbody lateral wall of holding rod 1 along the slotted hole 12 of its axis distribution, slotted hole 12 communicates the inside of holding rod 1, and the afterbody of elastic rod 10 is buckled and is 90 degrees and wear out behind slotted hole 12 with ejector pad 5 fixed connection.

Particularly, the outer side walls of the holding rod 1, the arc-shaped connecting rod 2 and the straight rod 3 are all polished through blunting, so that auxiliary damage can be effectively avoided.

Specifically, the elastic rod 10 is an elastic steel rod.

Specifically, the total height of the saw head 4 and the top plate 7 is smaller than the height of the receiving cavity 6, so that the saw head 4 can be completely received in the receiving cavity 6, and the damage to the surrounding tissues when the sternum saw is inserted is prevented.

Particularly, the radian of the arc-shaped connecting rod 2 is matched with the outline of the sternum, so that medical workers can put the sternum saw into the sternum saw through a lateral chest wall incision in an operation and effectively reach the back of the sternum.

The working principle is as follows: before inserting the sternum saw, the push block 5 is shifted to the rearmost end of the holding rod 1, the push block 5 pulls the ejector block 11 to slide into the accommodating cavity 9 through the elastic steel bar, and at the moment, the rectangular spring 8 enables the saw head 4 to retract into the accommodating cavity 6 through pushing the top plate 7 downwards, so that the damage of the saw head 4 to surrounding tissues is avoided when the sternum saw is placed in;

the front part of the sternum saw is provided with the arc-shaped connecting rod 2 which is designed according to the shape of a thorax, so that a person can be placed into the sternum saw through a lateral chest wall incision in an operation to effectively reach the back of a sternum;

besides, the saw head 4 at the front end of the whole device is of a sharp structure, all parts are designed to be blunt, operation is carried out under the monitoring of the thoracoscope, and side damage is effectively avoided.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sternum saw under thoracoscope, includes holding rod, arc connecting rod and straight-bar, its characterized in that: the saw head is placed in the containing cavity, a top plate is fixed at the lower end of the saw head and is connected in the containing cavity in a sliding mode, a sawtooth surface of the saw head penetrates out of an opening of the containing cavity, a rectangular spring is sleeved outside the saw head, two ends of the rectangular spring are respectively tightly propped between the upper end face of the top plate and the top wall of the containing cavity, an containing cavity is formed in the bottom of the side wall of the containing cavity, which faces one side of the arc-shaped connecting rod, a top block used for ejecting the saw head is placed in the containing cavity, the holding rod and the arc-shaped connecting rod are hollow rods and are communicated with each other, an elastic rod is inserted in the holding rod and the arc-shaped connecting rod in a sliding mode, the front end of the elastic rod penetrates into the containing cavity and is fixed on the rear end face of the top block, the side wall of the tail part of the holding rod is provided with sliding groove holes distributed along the axis of the holding rod, the sliding groove holes are communicated with the inside of the holding rod, and the tail part of the elastic rod is bent to 90 degrees and penetrates out of the sliding groove holes to be fixedly connected with the push block.

2. The thoracoscopic sternal saw of claim 1 which comprises: the front end upper surface of ejector pad is the wedge face, the rear end lower surface of roof is rather than the complex wedge face.

3. The thoracoscopic sternal saw of claim 1 which comprises: the outer side walls of the holding rod, the arc-shaped connecting rod and the straight rod are all polished through blunting.

4. The thoracoscopic sternal saw of claim 1 which comprises: the elastic rod is an elastic steel rod.

5. The thoracoscopic sternal saw of claim 1 which comprises: the total height of the saw head and the top plate is smaller than the height of the containing cavity.

6. The thoracoscopic sternal saw of claim 1 which comprises: the radian of the arc-shaped connecting rod is fit with the profile of the sternum.