Background technology
Retractor (retractors) is a kind of surgical operating instrument, in order to retract tissue, appears surgical field of view, is convenient to detect and operate.
Conventional retractor has metal retractors and soft retractor.
The two pawl retractor of the machinery that current surgery is conventional mostly is the metal material such as rustless steel and titanium alloy and makes, and its advantage is to provide very large support force for operative incision and to allow use of repeatedly sterilizing.Shortcoming is that shape is fixed, wound is comparatively large and comparatively large to the repressive damage of tissue, as periosteum injury, and bone nerve injury.
But in the middle of some surgery minimally invasive surgeries (the intercostal minimal incision * heart/lung as cardiothoracic surgery is performed the operation), operative incision need not provide large support force by retractor, at this moment metal retractors is used, and even unnecessary the soft tissue even repressive damage of the periosteum damage at neural position can be caused on the one hand due to tractive energetically.On the other hand because the restriction of its shape can stop surgical field of view to a certain extent, affect operation technique.
Applicant has developed the aseptic soft retractor (see Fig. 1) of single use for this reason, while certain tissue (operative incision) support force can be provided, hardly any repressive damage is produced to the tissue of otch distraction surface.In addition, the elasticity good due to it and supportive, this retractor can the operative incision of the various shape of extraordinary adaptation, and provides uniform support force for each position of whole otch.This retractor also has a very large advantage, while provide the uniform support force of safety, strength for operative incision, also has hemostatic function, and this is not available for any one metal retractors.Can to the hemostasis by compression of otch soft tissue while tissue retraction.In addition, it is soft retract band to incision soft tissue can play a protective role, make it not by wound.
This product is that the clinical support performance person clinical experience for many years of applicant accumulates of working out and is widely used in operating practical product, and obtains the support of clinicist.
As shown in Figure 1, the structure of this soft retractor is middle part one Nitinol becket 1, and becket 1 surrounding is stained with four traction belts 2, and the far-end bottom surface of every bar traction belt scribbles adhesive sticker.
Using method is as follows:
A) retractor of operative incision length and retractor similar diameters used is chosen;
B) catch the becket 1 (see Fig. 1) of soft retractor with finger and it is pinched ovalisation;
C) becket is put into until whole becket enters completely from incision;
D) pick up two relative traction belts 2 respectively, draw to the direction outside otch, make soft tissue form oval surgical field of view;
E) tear the antiseized paper slip below traction belt 2, expose non-drying glue layer, traction belt is fixed on skin overlay film.
Current existing soft retractor mainly comprises:
The soft retractor (as shown in Figure 1) of the applicant's exploitation, is made up of a becket and four traction belts.Becket is Ultimum Ti, and traction belt backing is artificial fiber spun-laced method non-woven fabrics, adhesive layer is medical acrylate emulsion-type pressure-sensitive.Single use, ray sterilizing;
The soft tissue retractor of Edward (Shanghai) medical supplies company limited registration, by retracting ring, retracts wall and adhesive tape forms.Retract ring by thermoplastic polyester elastomers, retracting wall is that polyether-polyurethane is made, and the backing of adhesive tape is non-woven fabrics, and adhesive layer is the medical viscose glue of acrylic acid.Single use, ray sterilizing.
But in the operation process of some long periods, cleanout fluid can soak the cloth of traction belt gradually, non-drying glue layer on cloth holds viscosity and bonding crystallized ability can decline soaking under environment it for a long time, will traction belt cloth be caused to have the risk come off, causes operation normally not carry out.Wish to design and develop the retractor of the new aseptic soft incision protection of waterproof reinforced type single use for this reason, meet former retractor using function and possess in situation safely and effectively the crystallized ability of water proofing property and Geng Gao.
Summary of the invention
The object of this invention is to provide a kind of retractor, it overcomes, and mechanical metal retractor shape in prior art is fixed, wound is comparatively large and to the repressive damage of tissue comparatively defective technical problem such as large (as periosteum injury, bone nerve injury); To solve in prior art soft retractor adhesive layer to be soaked crystallized ability by blood, cleanout fluid for a long time and to decline the technical problem causing retractor to come off simultaneously.
The invention provides a kind of retractor, this retractor comprises: becket; Multiple traction belt, wherein, described in each, described becket is fixed in one end of traction belt, described in each, the other end of traction belt comprises basal layer, described basal layer comprises first surface and second, and described first surface is covered with adhesive material layer, and described second face is covered with waterproof layer.
Selectively, the quantity of described traction belt is 4, and described traction belt is evenly distributed on around becket.
Selectively, described traction belt is evenly bonded in the surrounding of described becket.
Selectively, the material of described becket is nitinol alloy wire.
Selectively, described becket is that nitinol alloy wire is by welding or being connected the ring formed by metal joint.
Selectively, described one end of described traction belt broadens gradually to the described other end of described traction belt.
Selectively, two adjacent traction belts are fixed by suture in the edge of described becket.
Selectively, described basal layer is made up of non-woven fabrics.
Selectively, described adhesive material layer is pressure sensitive adhesive rubberised layer.
Selectively, described waterproof layer is polyurethane film.
Selectively, the antiseized art paper that can tear off is had outside described adhesive material layer.
Selectively, there is another pressure sensitive adhesive rubberised layer between described waterproof layer and described basal layer.
The advantage of retractor of the present invention comprises, and the traction belt of retractor of the present invention has covered one deck polyurethane film on prior art traction belt surface, product is possessed water proofing property, thus makes product crystallized ability more lastingly stable; Change traction belt profile, increase rubberised layer area traction belt is held viscosity is higher, crystallized ability is stronger.
Detailed description of the invention
Retractor of the present invention can use as the traction apparatus of the disposable aseptic soft incision protection strengthening water-proof function.Can be used in breast, abdominal surgery and Minimally Invasive Surgery, in the middle of operation, play breast, the effect such as incision of abdominal wall struts and fixes, to expose intracavity internal organs, provide good surgical field of view and working place.
Metal machinery retractor compared to existing technology, the present invention, while can providing certain tissue (operative incision) support force, produces any repressive damage to the tissue of otch distraction surface hardly; In addition, the elasticity good due to it and supportive, this retractor can the operative incision of the various shape of extraordinary adaptation, and provides safety, strength uniform support force for each position of whole otch; Also there is hemostatic function simultaneously, namely while tissue retraction to the hemostasis by compression of otch soft tissue, this is not available for any one metal retractors.Compare existing soft retractor, the present invention uses metallic nickel titanium alloy circle as supporter, and its prior art support force is larger more stable; Traction belt cloth strip adoption bonding region amplifies design, holds viscosity and crystallized ability is stronger than prior art; Traction belt rubberised layer reverse side adopts and covers polyurethane film PROCESS FOR TREATMENT, adds water-proof function, makes the ability of being adhesively fixed more lasting more stable than prior art.
Retractor of the present invention comprises: becket; Multiple traction belt, wherein, described in each, described becket is fixed in one end of traction belt, described in each, the other end of traction belt comprises basal layer, described basal layer comprises first surface and second, and described first surface is covered with adhesive material layer, and described second face is covered with waterproof layer.
The quantity of described traction belt can be 4 or other paired quantity, and described traction belt is evenly distributed on around becket.
Described traction belt evenly can be bonded in the surrounding of described becket.
The material of described becket can be the reasonable material of elasticity, can be such as nitinol alloy wire.
Described becket such as can for nitinol alloy wire be by the ring welded or connected by metal joint and formed.
Described one end of described traction belt broadens gradually to the described other end of described traction belt.
Two adjacent traction belts are preferably connected to each other in the edge of described becket, such as, fix by suture.
Described basal layer such as can be made up of non-woven fabrics.
Described adhesive material layer can use the various existing binding agent being applicable to medical treatment, is such as pressure sensitive adhesive rubberised layer.
Described waterproof layer can be polyurethane film.
The adherent layer that can tear off is had, such as antiseized art paper outside described adhesive material layer.
Another pressure sensitive adhesive rubberised layer can be had for being connected between described waterproof layer with described basal layer.
Below in conjunction with accompanying drawing, a specific embodiment is described.
As shown in Figure 2, a retractor of the present invention comprises: becket 11; 4 traction belts 12 be evenly distributed on around becket, wherein, described in each, one end of traction belt is bonded and fixed to described becket, the other end 13 of traction belt described in each is fixed on skin overlay film for pasting, comprise basal layer 23, described basal layer 23 comprises first surface and second, and described first surface is covered with adhesive material layer 24, be coated with separate paper 25 outside adhesive material layer 24, described second is connected with waterproof layer 21 by rubberised layer 22.As shown in Figure 3.
Described one end of described traction belt broadens gradually to the described other end of described traction belt.The Area comparison of such stickup is large, on bonding skin overlay film that can be stronger.
Two adjacent traction belts are fixed by suture in the edge of described becket.
Described basal layer is made up of non-woven fabrics.Described adhesive material layer is pressure sensitive adhesive rubberised layer.Described waterproof layer is polyurethane film.Rubberised layer 22 can be a pressure sensitive adhesive rubberised layer.
Becket 11 is connected to form by joint by tinsel two ends.
Below the parts of the product of the present embodiment and material composition thereof are listed as follows.
Product building block and each component materials composition
The present invention uses becket as the supporter retracting incision tissue, and its support force is larger more stable; Traction belt adopts gluing bonding region to amplify design, improves rubberised layer and holds viscosity and crystallized ability; Traction belt rubberised layer reverse side is covered with polyurethane film and plays water-proof function, makes the ability of being adhesively fixed more lasting more stable, also improves cloth tensile strength simultaneously.
The using method brief introduction of retractor of the present invention is as follows.
1. put into
First becket is pinched ovalisation, otch is put in one end of becket, more slowly puts into the other end, come up after waiting becket to put into otch completely finger, allows becket automatically strut.
2. adjust
Scalloping best effects is supportted, the position of adjustment traction belt for reaching retractor.Pick up two relative traction belts slowly to turn clockwise, make traction belt and operative incision be miter angle, the position of the traction belt that adjustment two other is relative makes it vertical with above-mentioned two traction belts; Under should guaranteeing that becket lies in otch simultaneously.
3. retract
After placing retractor, please determine that the skin overlay film around otch is clean, dry.Pick up two relative traction belts, draw to the direction outside otch; The antiseized paper slip at traction belt of then the tearing back side, exposes pressure sensitive adhesive rubberised layer, traction belt is fixed on skin overlay film.The traction belt relative to two other performs same operation.Can perform the operation after determining above-mentioned steps accuracy.
4. take out
Tear or cut off the traction belt be bonded on skin overlay film.If cut off traction belt, then the nearly part with skin overlay film of a montage, makes remaining part assist taking-up becket.A traction belt is utilized to be pulled out from otch by becket.The tissue of incision can push down becket usually, holds reciprocal traction belt to prevent becket landing.Check otch, determine foreign in otch, can sew up the incision.
The making assembling process of retractor of the present invention is summarized as follows.
1, the making of becket, by nitinol alloy wire by being positioned at the stainless joint crimping at its two ends thus forming annular.
2, the making of traction belt, at the both sides gluing of one end of non-woven fabrics, then covers watertight composition outward at the rubberised layer of side, such as medical polyurethane film.Separate paper is covered at opposite side.
3, assemble, the other end of 4 traction belts is uniformly distributed and is fixed on becket.
The advantage and disadvantage of retractor of the present invention is, by by traction belt overlay film, makes it have water preventing ability, thus improves its crystallized ability, prolongation set time.Have employed Technology for Heating Processing after becket docking molding makes becket have Memorability, and raising becket is placed to the resilience behind incision tissue bottom.Adjacent two panels traction belt is being fixed near the edge suture of becket, prevents traction belt to be subjected to displacement and to make becket exposed leading the part be bonded on becket in scalloping loading process; Traction belt is made up of 1 layer of polyurethane film, 1 layer of spun-laced nonwoven fabric, 1 layer of antiseized art paper, 2 layers of medical pressure-sensitive adhesive, wherein one deck pressure sensitive adhesive rubberised layer is for connecting polyurethane film and spun-laced nonwoven fabric, another layer of pressure sensitive adhesive rubberised layer is for connecting spun-laced nonwoven fabric and antiseized art paper, and traction belt structural bond order is followed successively by medical polyurethane film, medical pressure-sensitive adhesive rubberised layer, spun-laced nonwoven fabric, medical pressure-sensitive adhesive rubberised layer, antiseized art paper from top to bottom.Use such structure, when operative incision is retracted to satisfied operation demand, the antiseized art paper of traction belt of tearing end, expose the rubberised layer of non-woven fabrics lower floor, fixing traction belt on the operation peritoneum by medical pressure-sensitive adhesive rubberised layer traction belt cloth being pasted operation thereabout, thus maintain operation window form.
The above, only by way of example in the present invention preferably embodiment be described, be not intended to limit scope of patent protection of the present invention.Every utilize description of the present invention and accompanying drawing content to do equivalent structure or the conversion of equivalent flow process, or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.