CN207055726U - Self retaining catheter - Google Patents

Abstract

A kind of self retaining catheter, body is interior at least provided with not connected drainage channel and reservoir channel, is out-of-flatness by the inner surface setting of the draining hole connected with drainage channel.When the end by drainage channel adds negative pressure that negative pressure is aspirated or do not applied to drainage channel, when being only rinsed drainage by injecting flushing liquor, clot at draining hole by out-of-flatness surface by being cut, relative to by the smooth draining hole of inner surface, can be by clot cutting and crushing, it is changed into small clot, is easy to suction out.Clot is sucked out, and urine can be discharged smoothly.

Description

Self retaining catheter

Technical field

It the utility model is related to technical field of medical instruments, more particularly to a kind of self retaining catheter.

Background technology

Catheter, it is with pipeline made of natural rubber, silicon rubber or polyvinyl chloride (PVC), according to the port number in it Mesh can be divided into：Single-chamber, two-chamber and three-cavity catheter.Catheter can be through per urethram inserting bladder so that drainage of urine goes out Come, be clinically usually used at present with the Case treatments of symptom such as prostatitis, ankylurethria, hematuria.

Patient for needing urinary catheter in, bleeding are common symptoms.The clot that bleeding is formed easily blocks draining hole, Cause urine drainage difficult.

In view of this, the utility model provides a kind of new self retaining catheter, can smoothly discharge clot so that urine obtains Smoothly to drain.

Utility model content

The purpose that the utility model is realized is clot is smoothly discharged, and urine is smoothly drained.

To achieve the above object, the utility model provides a kind of self retaining catheter, including body, is at least set in the body Not connected drainage channel and reservoir channel are equipped with, the front end of the body has air bag, and the side wall of the body is provided with Draining hole, the draining hole communicate with drainage channel, and the reservoir channel connects with the air bag, the inner surface of the draining hole Out-of-flatness.

Alternatively, the inner surface of the draining hole is zigzag.

Alternatively, the inner surface of the draining hole has spine.

Alternatively, the draining hole is circular or ellipse.

Alternatively, the number at least two of the draining hole.

Alternatively, the number of the draining hole is two, and center line of described two draining holes along the body is symmetrically set Put or in the axial direction of the body in shifting to install.

Alternatively, the self retaining catheter is three-cavity catheter, and irrigation channel, the flushing are additionally provided with the body Passage, drainage channel, reservoir channel are not connected, and the side wall of the body is additionally provided with rinse mouth, and the rinse mouth is with rinsing Passage communicates, and the area of the rinse mouth is less than the area of the draining hole.

Alternatively, the self retaining catheter is double lumen catheter, and being provided only with not connected drainage in the body leads to Road and reservoir channel, the drainage channel inject suitable for flushing liquor, and the draining hole is suitable to injected flushing liquor and flowed out.

Alternatively, the self retaining catheter also includes the head being connected with the body, and the head is plug.

Alternatively, there is opening, the self retaining catheter is described to be open for leading when inserting or extracting on the plug Guide wire therefrom passes after the drainage channel of the body.

Compared with prior art, the technical solution of the utility model has the advantages that：1) by the interior table of draining hole Face is arranged to out-of-flatness, when the end by drainage channel add negative pressure to drainage channel aspirate or do not apply negative pressure, only pass through note When entering flushing liquor and being rinsed drainage, clot at draining hole by out-of-flatness surface by being cut, relative to smooth by inner surface Draining hole, clot cutting and crushing can be changed into small clot, be easy to suction out.Clot is sucked out, and urine can be discharged smoothly.

2) in alternative, the inner surface a) of draining hole is zigzag；Or b) there is spine.Zigzag is continuous one Section, or even can be set within one week along draining hole.Spine is one or more, if doing discontinuously arranged.No matter zigzag, or point Thorn, can form wedge angle by plane, can also form wedge angle by cambered surface.In other schemes, different from zigzag, draining hole it is interior Surface can also set corrugated, can realize and clot is cut.

3) in alternative, the number of draining hole is two or more.When for two when, a) two draining holes are along institute State the center line symmetrical setting of body, i.e. two draining holes are equal with the distance between the front end of the body, while in body Equal distribution on tour；Or b) the distance between two draining holes and front end of the body, i.e. two draining holes Shifted to install on body axial direction.Two draining holes, cutting efficiency can be improved relative to a draining hole, while can also avoided Opening is excessive to cause body enabling capabilities itself to be deteriorated.

4) in alternative, self retaining catheter a) can be three-cavity catheter, and not connected drainage is provided with body Passage, reservoir channel, irrigation channel, the side wall of body are additionally provided with rinse mouth, rinse and distinguish with drainage except setting draining hole Carried out using respective passage.Self retaining catheter b) can also be double lumen catheter, omit irrigation channel and rinse mouth, drainage with Rinse and all carried out by drainage channel, draining hole.

Brief description of the drawings

Fig. 1 is the structural representation of the three-cavity catheter in the utility model first embodiment；

Fig. 2 to Fig. 4 is the enlarged drawing of three kinds of concrete structures of the draining hole in Fig. 1；

Fig. 5 is the structural representation of the three-cavity catheter in the utility model second embodiment；

Fig. 6 is the structural representation of the three-cavity catheter in the utility model 3rd embodiment；

Fig. 7 is the structural representation that three-cavity catheter in the utility model fourth embodiment is in use state；

Fig. 8 is the structural representation that three-cavity catheter in the embodiment of the utility model the 5th is in use state；

Fig. 9 is the structural representation of the double lumen catheter in the utility model sixth embodiment.

Embodiment

It is understandable to enable above-mentioned purpose, feature and beneficial effect of the present utility model to become apparent, below in conjunction with the accompanying drawings Specific embodiment of the utility model is described in detail.

Fig. 1 is the structural representation of the three-cavity catheter in the utility model first embodiment；Fig. 2~4 are drawing in Fig. 1 The enlarged drawing of three kinds of concrete structures of head piece.

With reference first to shown in Fig. 1, catheter 1 includes body 11, and not connected drainage channel is provided with body 11 111st, irrigation channel 112, reservoir channel 113, the front end of body 11 have air bag 114, and the side wall of body 11 is provided with draining hole 115th, rinse mouth 116, draining hole 115 communicate with drainage channel 111, and rinse mouth 116 communicates with irrigation channel 112, reservoir channel 113 connect with air bag 114, and the area of rinse mouth 116 is less than the area of draining hole 115, the inner surface out-of-flatness of draining hole 115.

It is specifically introduced below.

Drainage channel 111, irrigation channel 112, reservoir channel 113 form three chambers of catheter 1.

Drainage channel 111 can be urethral catheterization passage, i.e., the urine in bladder enters drainage channel 111 by draining hole 115, Human body is discharged afterwards.The end of drainage channel 111 can set collecting bag, for collecting the urine drained.

By the end of reservoir channel 113, liquid can be injected into air bag 114, expand it, the front end of body 11 is consolidated Due in bladder, it is ensured that draining hole 115 is located in bladder during 1 indwelling of catheter.Air bag 114 is set around body 11.Extraction is led During urinary catheter 1, the liquid in air bag 114 first is released from the end of reservoir channel 113, makes its deflated, extract catheter 1 afterwards.

, can be through rinse mouth 116 (before being located at air bag 114, after draining hole 115) to bladder by the end of irrigation channel 112 Enter drainage channel 111 through draining hole 115 after the tissue such as interior injection flushing liquor, flushing liquor convergence clot and discharge human body.Rinse same When, the end of drainage channel 111 can also set negative pressure device, such as syringe, be aspirated by the negative pressure device, accelerate to rinse Liquid, clot tissue etc. enter drainage channel 111 by draining hole 115.

The area of rinse mouth 116 is less than the area of draining hole 115, when can prevent without rinsing, carries the groups such as clot The urine knitted enters irrigation channel 112 through rinse mouth 116.

Draining hole 115 can realize that shape can be circular, oval, square, square by being punched in the side wall of body 11 Shape or triangle etc..

Shown in reference picture 2, the side surface of the inner surface of draining hole 115, the i.e. hole that the side wall of body 11 is beaten sets zigzag Projection, in aspiration procedure, clot can be changed into small clot and entered drainage channel 111, relatively by the zigzag projection cutting and grinding In the situation that the inner surface of draining hole 115 is smooth, clot can be facilitated to discharge.

Zigzag shown in Fig. 2 is made up of multiple planes, in other embodiments, the zigzag can also as shown in figure 3, by Multiple cambered surfaces are formed.The cambered surface can be inner concave arc surface, or outer convex globoidal, can realize that clot is cut.

Zigzag is raised it can be seen from Fig. 2~Fig. 3 encloses around draining hole 115 1,360 degree of settings.Other embodiments In, some sections of settings can also be divided into, every section is continuous zigzag.

Shown in Figure 4 different from above-mentioned continuous zigzag, the structure that can realize clot cutting can also be spine 117.Spine 117 can be one, set on one point, or several, if being set doing.Spine 117 can be by more Individual plane is formed, and can also be made up of multiple cambered surfaces.

A) irrigation and drainage：The tissue such as flushing liquor, flushing liquor convergence clot is injected into bladder by the end of irrigation channel 112 Into drainage channel 111；Now, the end of drainage channel 111 is not added with negative pressure device；Or b) apply negative pressure device to drainage channel 111 suctions：Flushing liquor is injected into bladder by the end of irrigation channel 112, while the end of drainage channel 111 applies negative pressure device The tissue such as suction, flushing liquor convergence clot enters drainage channel 111；During two kinds of situations, clot passes through quilt at draining hole 115 Out-of-flatness surface is cut, and relative to by the smooth draining hole of inner surface, clot cutting and crushing can be changed into small clot, is easy to Suction out.Clot is sucked out, and urine can be able to smoothly enter draining hole 115, so as to discharge.

Fig. 5 is the structural representation of the three-cavity catheter in the utility model second embodiment；It should be noted that Fig. 5 In visual angle be visual angle after the body in Fig. 1 is rotated by 90 °.Fig. 6 is three chamber urethral catheterization in the utility model 3rd embodiment The structural representation of pipe, the visual angle in Fig. 6 are the visual angles of the body in Fig. 1, and the draining hole 115 that dotted line represents is located at the back side.

Shown in reference picture 5 and Fig. 6, it can be seen that compared with the three-cavity catheter 1 in Fig. 1, structure is roughly the same, difference It is only that：The number of draining hole 115 is not one, but two.In Fig. 5, center line pair of two draining holes 115 along body 11 Claim to set, i.e., the equal distribution on 360 degree of 11 periphery of body, and it is equal with the distance of the front end of body 11.In Fig. 6, two are drawn Head piece 115 shifts to install upwards in the centerline axis of body 11, i.e., the equal distribution on 360 degree of 11 periphery of body, but and body The distance of 11 front end.In other embodiments, the number of draining hole 115 can also be two or more, for along body 11 Center line symmetrical setting situation, multiple draining holes 115 can be in equal distribution on 360 degree of 11 periphery of body, can also not Equal distribution；For in the case of the centerline axis of body 11 shifts to install upwards, similarly, multiple draining holes 115 can be The upper equal distribution in 360 degree of 11 periphery of body, can also uneven equal distribution.

Fig. 7 is the structural representation that three-cavity catheter in the utility model fourth embodiment is in use state.

Shown in reference picture 7, compared with the three-cavity catheter 1 in Fig. 1, the structure of catheter 1 in the present embodiment is roughly the same, Differ only in：Catheter 1 also includes the head 12 being connected with body 11, and head 12 can be plug, and its hardness is more than body 11 hardness.There is opening 121, when catheter 1 is inserted or extracts human body, guiding wire 2 passes through the drainage of body 11 on plug Passed after passage 111 from the opening 121.

Fig. 8 is the structural representation that three-cavity catheter in the embodiment of the utility model the 5th is in use state.

The head 12 in two draining holes 115, fourth embodiments in second and third above-mentioned embodiment, have on head The opening 121 passed through for guiding wire 2 then one or can be combined all with implementing one, form the new structure of three-cavity catheter 1.Example As shown in reference picture 8, the draining hole 115 of two dislocation openings, it on the one hand can ensure air bag 114 when expanding out, if distance After the aperture area of a nearer draining hole 115 of air bag 114 reduces or blocked completely, another distant draining hole 115 remain to keep unimpeded；On the other hand relative to the draining hole 115 of symmetrical openings, it is avoided that body 11 at the end away from head 12 Body 11 itself support force compromises caused by two pieces of regions are removed at same distance.

Fig. 9 is the structural representation of the double lumen catheter in the utility model sixth embodiment.

Shown in reference picture 9, compared with the three-cavity catheter 1 in Fig. 1, it is logical that the catheter 1 ' in the present embodiment eliminates flushing Road 112 and rinse mouth 116, are double lumen catheter 1 '.In addition, other structures, such as the concrete structure of draining hole 115, with Three-cavity catheter 1 is identical.

When in use, the end for being flushed through drainage channel 111 is carried out double lumen catheter 1 ', and flushing liquor flows through drainage channel After 111, enter bladder from draining hole 115.Afterwards, such as a) the irrigation and drainage process of three-cavity catheter 1：Flushing liquor convergence clot etc. Tissue enters drainage channel 111；Now, the end of drainage channel 111 is not added with negative pressure device；Can also be as b) applied negative pressure device pair The process that drainage channel 111 aspirates：Stop the injection of flushing liquor, apply negative pressure device suction in the end of drainage channel 111, rinse The tissues such as liquid convergence clot enter drainage channel 111.During two kinds, clot by draining hole 115 by out-of-flatness surface Cutting.

In addition, have on head 12, head in two draining holes 115, fourth embodiments in second and third above-mentioned embodiment The opening 121 that some is passed through for guiding wire 2 can then one or all the double lumen catheter 1 ' with implementing in six combines, form new The structure of double lumen catheter 1 '.

Although the utility model discloses as above, the utility model is not limited to this.Any those skilled in the art, Do not depart from spirit and scope of the present utility model, can make various changes or modifications, therefore the scope of protection of the utility model It should be defined by claim limited range.

Claims (10)

1. a kind of self retaining catheter, including body, the body is interior to be led at least provided with not connected drainage channel with fluid injection Road, the front end of the body have air bag, and the side wall of the body is provided with draining hole, the draining hole and drainage channel phase Logical, the reservoir channel connects with the air bag, it is characterised in that the inner surface out-of-flatness of the draining hole.

2. self retaining catheter according to claim 1, it is characterised in that the inner surface of the draining hole is zigzag.

3. self retaining catheter according to claim 1, it is characterised in that the inner surface of the draining hole has spine.

4. self retaining catheter according to claim 1, it is characterised in that the draining hole is circular or ellipse.

5. according to the self retaining catheter described in any one of Claims 1-4, it is characterised in that the number of the draining hole is at least For two.

6. self retaining catheter according to claim 5, it is characterised in that the number of the draining hole be two, described two Center line symmetrical setting of the individual draining hole along the body or in the axial direction of the body in shifting to install.

7. self retaining catheter according to claim 1, it is characterised in that the self retaining catheter is three-cavity catheter, institute State and irrigation channel is additionally provided with body, the irrigation channel, drainage channel, reservoir channel are not connected, the side of the body Wall is additionally provided with rinse mouth, and the rinse mouth communicates with irrigation channel, and the area of the rinse mouth is less than the face of the draining hole Product.

8. self retaining catheter according to claim 1, it is characterised in that the self retaining catheter is double lumen catheter, institute State and not connected drainage channel and reservoir channel are provided only with body, the drainage channel injects suitable for flushing liquor, described Draining hole is suitable to injected flushing liquor and flowed out.

9. self retaining catheter according to claim 1, it is characterised in that also include the head being connected with the body, institute It is plug to state head.

10. self retaining catheter according to claim 9, it is characterised in that there is opening on the plug,

The self retaining catheter is described to be open for guiding wire after the drainage channel of the body when inserting or extracting Therefrom pass.