CN2505030Y

CN2505030Y - Triple-prongs intra-cavity retractor

Info

Publication number: CN2505030Y
Application number: CN 01271157
Authority: CN
Inventors: 魏文聪
Original assignee: SHENZHEN HOUYUAN MEDICAL APPARATUS CO Ltd
Current assignee: SHENZHEN HOUYUAN MEDICAL APPARATUS CO Ltd
Priority date: 2001-11-22
Filing date: 2001-11-22
Publication date: 2002-08-14
Anticipated expiration: 2011-11-22

Abstract

A triple-prongs intra-cavity retractor provided by the utility model is a special human medical device used for gasless surgery to elevate and stretch upward the abdominal wall of the patient. The utility model consists of three claw bars, three arch alculas, a main tube of the hook, a stressed ring, and a rotary locking structure, all of which are integrated as a whole, wherein, the rotary locking structure comprises a gear case cover, a stop knob, a gear wheel, a pin of positioning key, a cover of gear bearing, a sliding positioning pin, a concentric installation hole, and a sliding slot, etc. A subround plane with larger touching surface is formed when the three arch alculas are stretched apart, thereby decreasing the intensity of pressure on the abdominal wall, when the hooks stretches upwardly, the abdominal wall is under even stress without the stirring-up phenomenon, thereby not only preventing from the damages which is easily caused by the large intensity of pressure in the local muscle tissue, but also greatly ameliorating the quality of the surgical view.

Description

Three-jaw intracavity tractive hook

(1) technical field

A kind of three-jaw intracavity tractive hook is to be used for exempting from the pneumoperitoneum operation to promote the customized body medical apparatus and instruments that tractive patient stomach wall makes progress.

(2) background technology

The intracavity tractive hook that uses mostly is two pawl structures at present, and the shape of hook is " V " shape, and the subject matter that this design produces is: 1, cavity space is that taper is cut on the pinnacle, and surgical field of view is narrow, gives to observe with operation and causes difficulty.2, two branch end H/A wall contacts of " V " shape hook are " provoking " shape, and partial musculature's pressure is big, therefore, cause damage easily because of operating time is long.

(3) summary of the invention

In view of there are the problems referred to above in prior art, the three-jaw intracavity tractive hook that this utility model provides had both solved the narrow problem of surgical field of view, had avoided causing greatly easily because of patient partial musculature pressure the situation of damage again.It is made up of bar and hook, and bar is three claw bars, and hook is three circular arc hooks, and claw bar and hook and twist-lock structure division structure are one.

Because this utility model has adopted technique scheme, when therefore operating, the center hook is motionless, the both sides hook is to changeing 120 °, and when hook was all opened, it was shaped as one near circular plane, because the shape contact surface of hook is big, therefore, reduced stomach wall pressure, when hook upwards lifts, not only stomach wall is stressed evenly, do not have " provoking " shape, form a cavity space simultaneously, make the surgical field of view quality improve greatly as flat-top " yurt " shape.

(4) description of drawings

Fig. 1 is a structural representation of the present utility model, and the while is the book extract accompanying drawing as an illustration.

Fig. 2 is Fig. 1 profile.

Fig. 3 is the profile of stop knob among Fig. 1, Fig. 2 (5).

(1) hook (6) active claw bar (11) slip spacer pin

(2) the driven claw bar of hook main body pipe (7) gear (12)

(3) the concentric installing hole of stressed ring (8) positioning key pin (13)

(4) gear housing-case (9) gear-bearing lid (14) chute

(5) stop knob (10) center claw bar

(5) specific embodiment

With reference to Fig. 1 as can be known, this utility model is made up of bar and hook, and bar is center claw bar (10), driven claw bar (12) and active claw bar (6); Initiatively claw bar (6), hook main body pipe (2), stressed ring (3) are one with twist-lock structure division structure; Hook is three circular arc hooks (1), and the bending direction of hook is that the lower end with claw bar is the center, and with 70 ° ± 5 ° of circular arc direction deflections, it is similar to ellipse half, and hook is cross section at deflection starting point place by the longitudinal section transition.Three hooks (1) are one with the following termination of claw bar (10,12,6).With reference to Fig. 2, Fig. 3 as can be known, be that the twist-lock structure division of one comprises the gear housing-case (4) that is enclosed within hook main body pipe (2) upper end and stop knob (5) and the positioning key pin (8) on the gear housing-case (4) with active claw bar (6), hook main body pipe (2) and stressed ring (3) structure; Three gears (7) are housed in the gear housing-case (4); Gear (7) is with gear-bearing lid (9); An initiatively concentric installing hole (13) of claw bar (6) is arranged in stop knob (5) and the gear housing-case (4); Pack in the concentric installing hole (13) in the upper end of the extension rod of active claw bar (6); On installing hole (13) inwall chute (14) is being arranged with one heart; Slip spacer pin (11) is housed in this groove.

This utility model all adopts stainless steel material, and pinion is selected the 2Cr13 material for use, so that obtain case hardness behind the heat treatment.When three hooks overlap, require stacking arrangement from top to bottom, and want folding effective flexibly.By changing the length of three hooks, can also create a series of meet and satisfy all kinds of operation needs substantially exempt from the pneumoperitoneum operative space.

Claims

1, a kind of three-jaw intracavity tractive hook is made up of bar and hook, it is characterized in that bar is center claw bar (10), driven claw bar (12) and active claw bar (6); Initiatively claw bar (6), hook main body pipe (2) and stressed ring (3) are one with twist-lock structure division structure; Its hook is three circular arc hooks (1), and the bending direction of hook is that the lower end with claw bar is the center, and with 70 ° ± 5 ° of circular arc direction deflections, three hooks (1) are one with the following termination of claw bar (10,12,6).

2,, it is characterized in that the twist-lock structure division comprises the gear housing-case (4) that is enclosed within hook main body pipe (2) upper end and stop knob (5) and the positioning key pin (8) on the gear housing-case (4) according to the described three-jaw intracavity of claim 1 tractive hook; Three gears (7) are housed in the gear housing-case (4); Gear (7) is with gear-bearing lid (9); An initiatively concentric installing hole (13) of claw bar (6) is arranged in stop knob (5) and the gear housing-case (4); Pack in the concentric installing hole (13) in the upper end of the extension rod of active claw bar (6); On installing hole (13) inwall chute (14) is being arranged with one heart; Slip spacer pin (11) is housed in this groove.