CN201727547U

CN201727547U - Arthroscope channel protective sheath catheter

Info

Publication number: CN201727547U
Application number: CN2010202436031U
Authority: CN
Inventors: 陈昊; 杨柳; 郭林
Original assignee: First Affiliated Hospital of TMMU
Current assignee: Third Military Medical University TMMU; First Affiliated Hospital of TMMU
Priority date: 2010-06-30
Filing date: 2010-06-30
Publication date: 2011-02-02
Anticipated expiration: 2020-06-30

Abstract

The utility model discloses an arthroscope channel protective sheath catheter, which comprises a hollow catheter body. At least two shape memory material strips extending downwards are arranged on an end surface circle of the front end of the catheter body, furthermore, the shape memory material strips are sequentially adjacently arranged along a trace of the end surface circle of the front end of the catheter body, and a sleeve body with the inner diameter identical to that of the catheter body is formed at the front end of the catheter body. The arthroscope channel protective sheath catheter sufficiently overcomes shortages of the existing arthroscope surgical appliances. In addition, the arthroscope channel protective sheath catheter which is an improved cut protective sheath catheter keeps surgery channels smooth, increases surgery efficiency, guarantees surgical instruments against wounding soft tissues of skin of human bodies when passing in and out from the channel repeatedly, and prevents normal saline injected into a joint cavity from leaking into subcutaneous clearances to cause a series of complications such as edema, osteofascial compartment syndrome and the like.

Description

Arthroscope path protection sheath pipe

Technical field

This utility model relates to the medical appliance field, particularly a kind of arthroscope path protection sheath pipe.

Background technology

Arthroscope is the bar-shaped optical instrument about a kind of diameter 5mm that observes the joint internal structure, is the endoscope that is used for the diagnosis and treatment joint diseases.This apparatus was applied since 1970.Arthroscope is equipped with lens in the end of a tubule, tubule is inserted inside, joint, and the structure of inside, joint just can show on monitor.Therefore, can observe directly the structure of inside, joint.Arthroscope not only is used for the diagnosis of disease, and has been widely used in the treatment of joint disease.Arthrocsopic surgery is a kind of Minimally Invasive Surgery, begins to be mainly used in knee joint, and back sequential use is in hip joint, shoulder joint, ankle joint, little joints such as elbow joint and finger interphalangeal joint etc.

Arthroscope can be seen the position that intraarticular is nearly all, see more comprehensively than cutting the joint because image is through amplifying, thereby see more accurate, and otch is very little, wound is little, and cicatrix is few, and rehabilitation is fast, complication is few, after the anesthesia, the patient can descend ground movable after operation in early days in some cases, and the confidence that the patient is strengthened Fighting Disease is of great benefit to.To making a definite diagnosis of joint difficult and complicated illness, to the treatment of the puzzlement patient joint pain of injury for many years, arthrocsopic surgery often can be obtained the effect of getting instant result.

Compare with synosteotomy, arthrocsopic surgery has following advantage:

1. otch does not infect for a short time, cicatrix of skin is minimum;

2. operation wound is little, and operation safety, but repeat surgery do not influence the joint and do other hands art later on;

3. an Arthroscopic Operative can be treated multiple disease simultaneously, can carry out joint debridement art, synovial membrane wrinkle wall excision etc. simultaneously as knee surgery;

4. indication is wide, and it is applicable to IA various pathological changes, and contraindication is few.

Arthrocsopic surgery is by cutting several " chopsticks " of skin size or littler hole (5 one 10 millimeters), photographic head, surgical instrument being stretched in the person joint, under display monitors, by doctor's operation, diagnoses and treat various joint diseases.Yet the passage sheath of existing arthroscopic surgical instruments institute adapted is a hard metal sheath pipe, its length is considerably beyond the skin soft tissue thickness of arthroscope incision, in operation technique, drop easily, and the activity space in narrow relatively joint space such as elbow joint is very limited, so use and inconvenience, many surgical doctors are usually promptly abandoned this passage sheath after passage is set up in arthrocsopic surgery, make arthroscopic instrument directly pass in and out otch repeatedly, this increases the wound of incision easily, and each layer of arthroscope otch soft tissue is shifted thereupon when the patient changes position, make passage generation deformation, operator often need rebulid the arthroscope passage, greatly reduce operation efficient, increase partial wound, the normal saline that pours in the articular cavity leaks out to subcutaneous space and also may cause edema in addition, a series of complication such as osteofascial compartment syndrome

The utility model content

In view of this; the purpose of this utility model provides a kind of arthroscope path protection sheath pipe; this sheath pipe can make the otch passage keep open state unobstructed; be convenient to the turnover of operating theater instruments; improve operation efficient, avoid operating theater instruments to take place to contact to patient repeatedly to cause suffering with the integumentary musculature tissue of incision.

The purpose of this utility model is achieved through the following technical solutions: this arthroscope path protection sheath pipe comprises hollow tube body, the front end end face circle of described body is provided with at least two shape-memory material bars that extend downwards, under the normality, the marmem bar is crooked or parallel with the inner chamber axis of body to the inner chamber of body; After entering human body, the marmem bar is outwardly-bent, is adjacent to the inwall of otch, forms fixed effect;

Further, described shape-memory material bar is many and along the adjacent successively setting of the front end end face of body circle track, forms the body identical with internal diameter of tube body at the front end of body;

Further, the length span of described shape-memory material bar is 0.1cm～1.5cm;

Further, the length span of described body is 0.5cm～3cm, and the span of its internal diameter is 0.5cm～1.5cm;

Further, described body is the skin-friendly plastic tube body;

Further, described shape-memory material bar is Ti-Ni alloy bar or polymer shape memory material bar;

Further, the rear end of described arthroscope path protection sheath pipe is provided with fixedly step.

The beneficial effects of the utility model are:

1. this utility model has taken into full account the drawback that existing arthroscopic surgical instruments exists, by adopting mode at the fixing protection of incision sheath pipe, the turnover repeatedly of operating theater instruments can not come in contact with the skin and the muscle of human body, thereby can avoid the interior dabbling normal saline of articular cavity can not leak out to a series of complication such as subcutaneous generation edema;

2. be provided with the shape-memory material bar at the body front end, receipts state under being lower than the state of human body temperature, keeping, and enter human body after a bit of time with outside varicose, prop up the inwall of otch passage, thereby guaranteed fixing and passage unimpeded of body, guaranteed carrying out smoothly of operation;

3. this product structure is simple, and is easy to use, and effect is obvious, is fit to promote the use of.

Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can from practice of the present utility model, obtain instruction to investigating hereinafter.Target of the present utility model and other advantages can realize and obtain by following description and claims.

Description of drawings

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing this utility model is described in further detail, wherein:

Fig. 1 is this utility model structural profile sketch map;

Fig. 2 be Fig. 1 along A to sketch map;

Fig. 3 is a user mode sketch map of the present utility model.

The specific embodiment

Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.Should be appreciated that preferred embodiment only for this utility model is described, rather than in order to limit protection domain of the present utility model.

As depicted in figs. 1 and 2, arthroscope path protection sheath pipe of the present utility model comprises hollow tube body 1, and the front end end face circle of body 1 is provided with the shape-memory material bar 2 of downward extension.In the present embodiment,

Shape-memory material bar 2 is many and along the adjacent successively setting of the front end end face of body circle track, forms the body identical with internal diameter of tube body at the front end of body.Wherein, the length span of shape-memory material bar is 0.5cm, and the length of body 1 is 2cm, and the span of its internal diameter is 0.8cm.

Body 1 is the skin-friendly plastic tube body, shape-memory material bar 2 is the polymer shape memory material bar, existing macromolecule polymer material with shape memory effect has multiple, representative material has polymer in poly lactic acid series, polyolefin polymer and polyether polyols with reduced unsaturation, integrate good biological degradability, biocompatibility and shape-memory properties, basically all have extraordinary high mechanical strength and pliability, therefore its deformation temperature scalable is suitable for surgical operation or medical apparatus and instruments implant more near human body temperature.

The rear end of body 1 is provided with fixedly step 3, can contact with the external skin of human body, realizes the external fixation effect.

As shown in Figure 3, this utility model is entering human body after a period of time, and deformation will take place the shape-memory material bar 2 of front end, and the inwall of otch passage is propped up in outwards varicose, realizes that fixed effect also guarantees the unimpeded of passage.

Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, 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 make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims

1. arthroscope path protection sheath pipe, it is characterized in that: described arthroscope path protection sheath pipe comprises hollow tube body (1), the front end end face circle of described body (1) is provided with at least two shape-memory material bars (2) that extend downwards.

2. arthroscope path protection sheath pipe according to claim 1 is characterized in that: described shape-memory material bar (2) is formed the body identical with internal diameter of tube body for many and along the adjacent successively setting of the front end end face of body circle track at the front end of body.

3. arthroscope path protection sheath pipe according to claim 1 and 2, it is characterized in that: the length span of described shape-memory material bar is 0.1cm～1.5cm.

4. arthroscope path protection sheath pipe according to claim 3, it is characterized in that: the length span of described body (1) is 0.5cm～3cm, the span of its internal diameter is 0.5cm～1.5cm.

5. arthroscope path protection sheath pipe according to claim 1 is characterized in that: described body (1) is the skin-friendly plastic tube body.

6. arthroscope path protection sheath pipe according to claim 3 is characterized in that: described shape-memory material bar (2) is Ti-Ni alloy bar or polymer shape memory material bar.

7. arthroscope path protection sheath pipe according to claim 1 is characterized in that: the rear end of described body (1) is provided with fixedly step (3).