CN2215283Y

CN2215283Y - Changeable trocar for puncture of pleura and peritoneum

Info

Publication number: CN2215283Y
Application number: CN 94237976
Authority: CN
Inventors: 周小平; 李云峰
Original assignee: 周小平
Priority date: 1994-08-05
Filing date: 1994-08-05
Publication date: 1995-12-20
Anticipated expiration: 2004-08-05

Abstract

The utility model is composed of a needle core, a needle tube and a rubber pad. The utility model is characterized in that the methods of dullness has sharp edge and sharp edge has dullness; the mouth of a needle fetching tube is blunt, having no puncturing function to viscera in cavities; the mouth tip of the needle fetching core has a sharp edge; after the needle tube with the blunt mouth enter the cavity, the needle core is quit, and suction, drainage, rinse is carried out with the needle tube. The utility model can relieve the opening cut of operations, having the advantages of safety, economy and high durability. The utility model is suitable for puncture, drainage, rinse, assisting diagnose and administration treatment for various medical units.

Description

Changeable trocar for puncture of pleura and peritoneum

This utility model relates to a kind of breast, peritoneal cavity puncture needle, and feature is type variable breast, peritoneal cavity paracentesis trocar.

Up to now, the pleural space perforator has two classes: a class is traditional thoracic-puncture needle, and the sharp profit of its pin has the potential danger of the lung tissue of puncturing when entering behind the pleural space, especially adopting on the closed drainage; Another kind of is soft thoracic duct, though there is not the potential danger that lung tissue is punctured in it after entering pleural space, but it must start certain wound at the position, breast corridor that enters by scalpel, separates muscle, could send in the pleural space by metal-cored firmly thoracic duct being inserted then.The existing peritoneo-puncture needle that still adopts the sharp profit of conventional needle of peritoneal cavity puncture, though the threat that abdominal viscera is constituted is little than the pleural space puncture, but can't resolve some common acute abdomen, for example liver abscess breaks, also the blue tail inflammation of perforation, the dense property of acuteization and gangrene is also bored a hole, the ileum typhoid fever is burst intestinal and perforation, acute hemorrhage and necrotizing pancreatitis merge peritonitis for cruveilhier ulcer or duodenal ulcer, and the cleaning of some diseases such as peritoneal abscess and satisfied drain, be difficult to avoid operation.

The purpose of this utility model is the cover needle method of utilization " rust in sword, the sword is arranged in blunt ", solves the cleaning and the drain of not enough and above-mentioned some diseases of above-mentioned breast, peritoneal cavity lancet device.

This utility model is realized as follows: get that the needle tubing mouth is blunt not to have the effect of puncturing to lung tissue and abdominal visceral browser, get the sharp cutting edge of needle core nozzle and with the needle tubing internal diameter contain connect tightr, needle tubing mouth external diameter dwindles gradually, nook closing member is sharp-tongued can be sent into blunt mouth needle tubing band in breast or the peritoneal cavity, for nook closing member is withdrawed from smoothly, get the needle core base diameter both less than needle tubing seat internal diameter, the rubber tube interior diameter that connects less than the needle tubing seat again, and inferior bell shape structure is made in the needle core base rear end, be convenient to withdraw from by the outer wriggling of rubber tube, air does not enter in pleural space and the peritoneal cavity when guaranteeing that nook closing member withdraws from needle tubing, the length of getting rubber tube is to be equal to or greater than 1.5 times of nook closing member total length, be convenient to gripping pliers and be the segmental clamp, for keeping the needle tubing drain unobstructed and thorough, establish asymmetric aperture in needle tubing front end both sides, for stablizing the needle tubing degree of depth, establish fixing head and valve rubber removably at needle tubing seat and needle tubing bar intersection, they fixedly needle tubing on thoracic wall or stomach wall, needle tubing can not advanced in desired depth; For understanding the needle tubing depth of needle, be marked with scale at needle tubing.

Compared with the prior art this utility model has following advantage: 1, the suitability is wide, and it is widely used in the pleuroperitoneal cavity hydrops puncture suction of (comprising pus and blood), acute abdomen early stage hydrops puncture suction and flushing in a small amount; Acute abdomen, the dense swollen puncture drainage flushing in abdominal cavity; That liver puncture is taken out is dense, flushing and peritoneal dialysis puncture etc.2, safe and reliable, easy and simple to handle, both avoided traditional puncture needle to breast, the dirty potential danger that punctures of peritoneal cavity fully, variable again kinetoplast position is washed repeatedly, drain is thorough, avoided lock thing that scalpel starts and patient's fear simultaneously, smoothly the same with traditional breast, peritoneal cavity puncture procedure.3, simple in structure, easy to manufacture.4, can permanently use repeatedly through the high-temperature sterilization sterilization.

Accompanying drawing is given to describe to this utility model in conjunction with the embodiments.

Fig. 1 is this utility model cutaway view.

Fig. 2 is this utility model needle tubing front view.

Fig. 3 is this utility model needle tubing rearview.

Fig. 4 is this utility model valve rubber side view.

Fig. 5 is this utility model needle tubing seat and needle core base right view.

Number in the figure: 1-needle core nozzle, 2-nook closing member bar, 3-needle core base, 4-needle core base tail, 5-needle tubing mouth, 6-needle tubing bar side opening, 7-needle tubing bar, 8-needle tubing fixing head, 9-needle tubing seat, 10-needle core base head, 11-valve rubber, 12-valve rubber center needle canister aperture, 13-needle tubing scale, 14-valve rubber opening.

Referring to accompanying drawing 1, this utility model is made up of nook closing member, needle tubing and valve rubber ［ 11 ］.The front end of needle tubing is taper ozzle ［ 5 ］, the middle part is a cylindrical shape needle tubing bar ［ 7 ］, the rear portion is for chamfering tetragon needle tubing seat ［ 9 ］, between needle tubing bar ［ 7 ］ and needle tubing seat ［ 9 ］, be provided with fixing head ［ 8 ］, the needle tubing front part sides is established asymmetric needle tubing bar side opening ［ 6 ］, establish depth of needle scale ［ 13 ］ in needle tubing one side, the needle tubing internal structure had both adapted to syringe nozzle and has contained and connect, and was suitable for needle tubing seat ［ 9 ］ again and coincide firmly and do not hinder withdrawing from of needle core base ［ 3 ］.Nook closing member divides taper needle core nozzle ［ 1 ］ cylindrical needle core bar ［ 2 ］ needle core base ［ 3 ］ three parts, needle core nozzle is sharp to be conical, and cylindrical needle core bar ［ 2 ］ is combined into truncated cone-shaped needle core base head ［ 10 ］ with needle core base ［ 3 ］, the needle core base rear portion is an inferior bell shape needle core base tail ［ 4 ］.The valve rubber ［ 11 ］ that is placed in needle tubing seat ［ 9 ］ fixing head ［ 8 ］ bottom is provided with the opening of being convenient to load and unload ［ 14 ］, and valve rubber ［ 11 ］ center has needle tubing trepanning ［ 12 ］.Needle tubing internal diameter and the driving fit of nook closing member external diameter coupling, with easy access again.

Deisgn product model specification table

Needle tubing model (with the conventional needle model)	12	16	20
				Needle tubing pole length (cm)	3、4、5、6、 7、8、9、10	3、4、5、6、 7、8、9、10	3、4、5、6、 7、8、9、10
Needle core nozzle length (cm)	0.25	0.30	0.35

Use operation of the present utility model: 1, prepare, with the conventional high-temperature sterilization sterilization of 24 of three classes (box) paracentesis trocar, select pin number for use according to patient's body size fat or thin (the best desired depth that ultrasound wave shows) and lesion nature, needle selection pipe pole length is that ultrasound wave shows that optimum depth adds 10mm, this root trocar of choosing is penetrated two adjacent fixing heads in movable valve rubber circle hole, the needle tubing cover for seat is gone into length to be the rubber tube of 1.5 times of nook closing member total lengths and to tighten, and clamps the rubber tube tail end with gripping pliers; 2, the selection of skin degerming, local anaesthesia and point of puncture is with conventional puncture method; 3, puncture procedure is pressed puncture direction (ultrasound wave shows direction) inserting needle (with the dominant hand thumb, food two refers to pinch the needle tubing seat, middle finger props up needle core base by rubber tube, three refer to unite firmly suitably rotation propelling to the left and right) through rubber activity mat, then with thumb, food two refers to that pinch the inferior bell shape of needle core base tail end by rubber tube retreats nook closing member with being creeping motion type, in the time of in needle core nozzle retreats to the needle tubing seat, the rubber tube end puts syringe, unclamp the gripping pliers suction, if do not get liquid or gas as yet, when puncture, there is not the sense of breakthrough again, then the valve rubber on the needle tubing is removed one of front, put the degree of depth of a valve rubber of nook closing member propelling again, again needle core nozzle is retreated in the needle tubing seat and aspirate, when getting liquid or gas, with fixing head with valve rubber is close to breast or stomach wall is fixed, nook closing member retreats when treating that needle core base retreats to the rubber tube end, clamp rubber tube between needle core nozzle and the needle tubing seat with another gripping pliers, the gripping pliers that unclamps the rubber tube end more all withdraws from nook closing member, can do disposable suction.If need drain and flushing, can remove remaining valve rubber, the inserting needle fixing head that go directly, and this plate is fixed in breast or stomach wall, withdraw from nook closing member connection drainage tube.So far, breast or peritoneal cavity puncture overall process is finished.

This utility model also can do to change the position operation, will describe in products instruction, and this slightly.

Claims

1, a kind of breast, peritoneal cavity puncture needle, particularly type variable breast, peritoneal cavity paracentesis trocar, form by nook closing member, needle tubing and valve rubber three parts, nook closing member is set in the needle tubing, nook closing member external diameter and the driving fit of needle tubing internal diameter coupling, it is characterized in that: needle tubing seat [9] is provided with fixing head [8] and the removably movable valve rubber [11] that is used for stablizing the needle tubing degree of depth with needle tubing bar [7] intersection; Be provided with asymmetric needle tubing side opening [6] in the needle tubing front part sides; On the needle tubing outer wall, be carved with the needle tubing scale [13] of reflection puncture depth of needle.

2, paracentesis trocar as claimed in claim 1, become to delay the pyramid body behind the taper needle tubing mouth ［ 5 ］ that it is characterized in that the needle tubing front end and taper needle core nozzle ［ 1 ］ fit, nook closing member bar ［ 2 ］ is a spacing truncated cone-shaped needle core base head ［ 10 ］ with needle core base ［ 3 ］ adapter section, and the afterbody of needle core base ［ 3 ］ is for ease of the inferior bell shape needle core base tail ［ 4 ］ of the withdraw of the needle.

3, paracentesis trocar as claimed in claim 1 is characterized in that movable valve rubber ［ 11 ］ center of cushion under fixing head ［ 8 ］ is provided with the circular hole ［ 12 ］ of trocar tube, and is provided with a radius shape opening ［ 14 ］ of being convenient to load and unload.