CN216319444U - Pigtail drainage catheter - Google Patents

Abstract

The utility model discloses a pigtail drainage catheter, which relates to the technical field of drainage catheters and comprises a pigtail curling section and a drainage catheter body, wherein one end of the pigtail curling section is provided with the drainage catheter body, the other end of the drainage catheter body is provided with an external joint, the other end of the external joint is spliced with an internal joint, a fixed seat is sleeved on the external joint, the internal joint is provided with a groove, a sealing element is arranged in the groove, the other end of the groove is provided with a wire groove, one end of a pull wire penetrates through the external joint from a wire hole of the pigtail curling section, forwards penetrates through a abdication hole of the sealing element and penetrates out of the wire groove to be connected in a through hole of a pull wire handle, the utility model solves the problems that the traditional pigtail drainage catheter is easy to slide, the structure is simple, the performance is reliable, the connection part of a locking wire and the outside is completely sealed, the secondary infection caused by the phenomenon of air leakage and liquid leakage can be effectively prevented, and the locking wire can be freely pulled, the clinical operation is safe and convenient, and the utility model can be used in both the pleuroperitoneal cavity and the abdominal cavity.

Description

Pigtail drainage catheter

Technical Field

The utility model relates to the technical field of drainage catheters, in particular to a pigtail drainage catheter.

Background

The pigtail drainage catheter is placed into a pleural effusion and abdominal effusion abscess cavity for drainage and intracavity perfusion or flushing in an operation or guided by imaging equipment such as B-ultrasonic, X-ray, CT and the like. The pigtail catheter has smooth surface, clear development under X-ray, good biocompatibility, long retention time, large side hole, large flow, and difficult slipping of the tip bent into the pigtail shape compared with a straight tube, so the pigtail catheter is widely used clinically. The tail end of the pigtail drainage tube is curled to form a pigtail, and the curled pigtail drainage tube can effectively prevent the catheter from coming out from the inlet, so that the catheter is separated from a body cavity, the displacement of the catheter body can be prevented, and the occurrence of complications is reduced. CN201320342931.0 discloses a drainage catheter, which is shaped by controlling the pigtail loop of the drainage catheter with a fishing line, so that the drainage catheter can be fixed at an accurate position for a long time, and discharge effusion out of the human body in time, thereby alleviating the pain of the patient, and the drainage catheter aims at the shape of the pigtail at the head end of the catheter and is bent and locked, and the structure has the following disadvantages: 1. the sliding sleeve type assembly process is complex and is spliced and butted by a plurality of small buckle type structural parts; 2. air and liquid leakage are easy to leak at the communication part of the locking wire and the outside, so that bacteria enter the catheter along the locking channel to cause secondary infection, and the catheter can only be used for drainage of the abdominal dropsy and cannot be used for the thoracic cavity; 3. the locking wire has large twitching resistance, is not easy to twitch, is inconvenient for a doctor to operate and is easy to break. 4. Mainly depends on the pigtail shape of the bending of the head end of the catheter to play the role of anti-slipping, but the hardness of the catheter body is not strong enough, and the condition of tube slipping is easy to occur when a patient moves. Therefore, there is a need for those skilled in the art to design a new pigtail drainage catheter.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that a traditional pigtail drainage catheter is easy to slide, and provides a pigtail drainage catheter with a locking wire system. The drainage catheter has the advantages of simple structure and reliable performance, the connection part of the locking wire and the outside is completely sealed, secondary infection caused by air leakage and liquid leakage can be effectively prevented, the locking wire can be freely drawn, the clinical operation is safe and convenient, and the drainage catheter can be used in the pleuroperitoneal cavity.

In order to solve the problems, the utility model provides a pigtail drainage catheter which comprises a pigtail curling section and a drainage tube body, wherein one end of the pigtail curling section is provided with the drainage tube body, the other end of the drainage tube body is provided with an external joint, the other end of the external joint is inserted with an internal joint, a fixing seat is sleeved on the external joint, the internal joint is provided with a groove, a sealing element is arranged in the groove, the other end of the groove is provided with a wire groove, and one end of a pull wire penetrates through the external joint from a wire hole of the pigtail curling section, forwards penetrates through a abdicating hole of the sealing element and penetrates out of the wire groove to be connected in a through hole of a pull wire handle.

Preferably, the pigtail curls section and includes drainage side chamber and through wires hole, the drainage side chamber is oval structure, the drainage side chamber is equipped with at least 4, the through wires hole is circular structure, the through wires hole is equipped with 2 at least.

Preferably, one end of the inner joint connected with the outer joint is an a end of the inner joint, the a end of the inner joint is of a cylindrical structure, a rectangular drawing groove is formed in the end face of the a end of the inner joint, and the groove is formed in the drawing groove.

Preferably, the sealing member is a silica gel strip, the top of the sealing member is of an arc structure, the top of the sealing member is an arc surface, the arc surface and the arc surface of the drawing groove are arranged in parallel, the bottom of the sealing member is attached to the bottom of the groove, the silica gel strip with the arc surface is additionally arranged between the outer joint and the inner joint, the drawing groove reserved for drawing the pull wire can be prevented from leaking liquid and air, and meanwhile, the silica gel strip is made of an elastomer material and can be drawn freely when the nylon wire is drawn.

Preferably, the sealing element is provided with at least two yielding holes, and the aperture of each yielding hole is smaller than the diameter of the stay wire. The pull wire can conveniently pass through the drainage tube, and accumulated liquid and air can not enter the drainage tube along the threading hole.

Preferably, the inner joint is provided with a table top, the table top is tightly attached to the outer joint, and the table top plays a role in connection limiting and sealing.

Preferably, the other end of the inner joint is an inner joint b end, and the inner joint b end is an outer cone joint structure and is used for connecting the drainage catheter and the connecting pipe and draining the effusion from the drainage catheter into the drainage bag.

Preferably, the table top is of a prismatic structure, and the table top is attached to the gear inside the pull-cord handle, so that the pull-cord handle can be effectively fixed on the inner connector and cannot easily slip off.

Preferably, the two ends of the outer joint comprise an outer joint end a and an outer joint end B, the inner joint is inserted into the outer joint from the outer joint end a, the end face of the outer joint end a is attached to the table top of the inner joint, a fixing seat clamping groove is arranged at the outer joint end B, and the fixing seat clamping groove is in a tapered transition structure.

Preferably, one end of the fixing seat is provided with a circular ring, the circular ring is of a circular structure with a small outer part and a large inner part, the circular ring is buckled in a clamping groove of the fixing seat, the fixing seat is used for buckling the circular ring of the outer joint to be designed into a circular structure with a small outer part and a large inner part, a large circular part inside the circular ring smoothly penetrates into the clamping groove along the taper of the outer joint, the assembly is convenient, and the small outer part ensures that the fixing seat cannot be easily separated from the outer joint.

Preferably, the pull wire is injection molded from nylon as an integrally molded structure.

Compared with the prior art, it possesses following beneficial effect:

the anti-slipping pigtail drainage catheter with the locking wire system is simple in structure, convenient to operate during production and assembly and stable in process.

The connection part of the stay wire for locking and the outside is sealed by a sealing element, the cambered surface of the sealing element can be seamlessly connected with the cylinder of the inner joint, the outer joint is butted and attached with the table surface of the inner joint, the outlet of the sealing element is completely sealed by silica gel due to the characteristics of the silica gel, the double sealing effect is realized, the secondary infection caused by air leakage and liquid leakage is effectively prevented, the drainage catheter is safer and more reliable, and the drainage catheter is suitable for the pleuroperitoneal cavity.

The sealing element is provided with two threading holes with the diameter smaller than that of the stay wire, so that the stay wire can conveniently pass through the sealing element, the outlet opening can be completely sealed, and the stay wire can be freely drawn without overlarge resistance when being drawn and pulled by the aid of the reserved threading holes while the sealing element is ensured to be sealed.

The gear design of the pull wire handle is matched with the prismatic design of the inner joint, so that the pull wire handle can be effectively and firmly fixed on the inner joint, and the curled pigtail shape can be completely locked.

The design of the large elliptic drainage side hole of the curled pigtail section of the utility model is smooth in drainage and not easy to block, and has obvious advantages for drainage of liver, gallbladder, spleen and pancreas and retroperitoneal mucosal effusion.

Drawings

FIG. 1 is a schematic view of the pigtail drainage catheter of the present invention.

FIG. 2 is a schematic view of the structure of the external joint, the internal joint and the sealing member.

Fig. 3 is a schematic structural view of the nipple.

Fig. 4 is a schematic structural diagram of the external joint.

Fig. 5 is a schematic structural view of the sealing member.

Fig. 6 is a schematic structural view of a pull-cord handle.

In the figure: 1-pigtail curling section, 2-drainage tube body, 3-external joint, 4-fixing seat, 5-internal joint, 6-stay wire, 7-sealing element, 8-stay wire handle, 9-groove, 10-wire groove, 11-internal joint a end, 12-internal joint B end, 13-external joint A end and 14-external joint B end.

Detailed Description

The utility model is further explained below with reference to the figures and examples.

The first embodiment is as follows: the utility model provides a pigtail drainage catheter, includes pigtail curls section 1, drainage tube pipe shaft 2, 1 one end of pigtail curls section is equipped with drainage tube pipe shaft 2, the drainage tube pipe shaft 2 other end is equipped with outer joint 3, the 3 other ends of outer joint are pegged graft and are had nipple 5, and fixing base 4 overlaps on outer joint 3, recess 9 has been seted up on nipple 5, be equipped with sealing member 7 in the recess 9, the other end of recess 9 is equipped with wire casing 10, and 6 one end of acting as go-between passes the hole of stepping down of outer joint 3 and passing sealing member 7 forward and wears out the coiling from wire casing 10 and connects in 8 through-holes of acting as go-between handle from pigtail curls section 1.

Example two: the pigtail curly section 1 includes drainage side chamber and through wires hole, the drainage side chamber is oval structure, the drainage side chamber is equipped with 4 at least, the through wires hole is circular structure, the through wires hole is equipped with 2 at least its, and drainage tube shaft 2 is in succession through the mode of an organic whole moulding plastics with outer joint 3, and all the other technical scheme is the same with embodiment one.

Example three: one end of the inner joint 5 connected with the outer joint is an inner joint a end 11, the inner joint a end 11 is of a cylindrical structure, a rectangular drawing groove is formed in the end face of the inner joint a end 11, the groove 9 is formed in the drawing groove, the other end of the inner joint 5 is an inner joint b end 12, the inner joint b end 12 is of an outer cone joint structure, and the other technical scheme is the same as that of the first embodiment or the second embodiment.

Example four: the sealing member 7 is the silica gel strip, 7 tops of sealing member are the arc structure, 7 tops of sealing member are the arcwall face, the arcwall face is parallel arrangement with the cambered surface of taking out the groove, the bottom of sealing member 7 is laminated with the bottom of recess mutually, be equipped with two at least holes of stepping down on the sealing member 7, the aperture of the hole of stepping down is less than the 6 line footpaths of acting as go-between, and other technical scheme are the same with embodiment one or two or three.

Example five: the inner joint 5 is provided with a table top which is tightly attached to the outer joint, the table top is of a prismatic structure and is attached to the internal gear of the stay wire handle 8, and other technical schemes are the same as those of the first embodiment, the second embodiment, the third embodiment and the fourth embodiment.

Example six: the two ends of the outer joint 3 comprise an outer joint A end 13 and an outer joint B end 14, the inner joint 5 is inserted into the outer joint 3 from the outer joint A end 13, the end face of the outer joint A end 13 is attached to the table top of the inner joint, a fixing seat clamping groove is arranged at the outer joint B end 14 and is of a conical transition structure, and the rest technical schemes are the same as those of the first embodiment, the second embodiment, the third embodiment, the fourth embodiment and the fifth embodiment.

Example seven: one end of the fixed seat 4 is provided with a circular ring, the circular ring is of a circular structure with a small outer part and a large inner part, the circular ring is buckled in a clamping groove of the fixed seat, and the other technical schemes are the same as those of the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment and the sixth embodiment.

Example eight: the groove 9 for placing the sealing element 7 in the inner joint 5 is of an annular structure, the inner joint 5 surrounds the cylinder of the inner joint 5 for a circle, the sealing element 7 is a cambered-surface silica gel ring, the periphery of the silica gel ring can be sealed, the inner joint 5 and the outer joint 3 can achieve the sealing effect only by bonding a small amount of adhesive, and other technical schemes are the same as those of the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment and the seventh embodiment.

Example nine: the drainage catheter is additionally provided with scale marks, so that not only can production personnel conveniently determine the position of the coating, but also doctors can conveniently judge the tube placement depth during puncture tube placement, and other technical schemes are the same as those in the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment, the seventh embodiment and the eighth embodiment.

Example ten: the pigtail curly section 1 and the drainage tube body 2 are made of medical high polymer materials, the drainage tube is flexible and can be bent randomly, meanwhile, the drainage tube is not harmful to human bodies, the drainage tube made of the medical high polymer materials can be used for long-term indwelling drainage, the pain of a patient caused by repeated tube drawing and tube placing is reduced, and other technical schemes are the same as those of the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment, the seventh embodiment, the eighth embodiment and the ninth embodiment.

In order to facilitate understanding of the above-described embodiments of the present invention, the following detailed description will be given of the above-described embodiments of the present invention in a specific manner of use.

The specific installation process is as follows: one end of a stay wire 6 penetrates into the outer joint 3 from one threading hole of the pigtail curling section 1, the other end of the stay wire 6 penetrates into the outer joint 3 from the other threading hole of the pigtail tube curling section 1, two end ends of the stay wire 6 respectively penetrate into the other end from one end of a sealing element 7 through abdicating holes on the sealing element 7, the sealing element 7 with the penetrated wire is placed in a groove 9 of the inner joint 5, the inner joint 5 with the sealing element 7 is connected with the outer joint 3, and the stay wire 6 penetrates out of a wire groove 10 of the inner joint; the pull wire 6 passes through a through hole on the pull wire handle 8 to form a knot; and the fixing seat is sleeved on the outer joint 3 and used for fixing the drainage catheter on the epidermis of the human body after the drainage catheter is placed into the human body so as to prevent the catheter from moving.

When the puncture needle is used specifically, the thoracic/abdominal cavity skin puncture point is determined by B ultrasonic, the pull-wire handle 8 is loosened, the pull-wire handle 8 is separated from the inner joint 5, the puncture cannula is used for straightening the curling section 1 of the pigtail drainage catheter, the tip end of the drainage catheter enters a focus under the guide of the guide wire and exits the puncture cannula, the pull wire 6 exposed outside is wound on the prismatic part of the inner joint 5 after the pull wire 6 is pulled by the pull-wire handle until the pull wire cannot be pulled out, then the pull-wire handle 8 is locked on the prismatic part of the inner joint 5, so that the curling part of the pigtail of the drainage catheter is locked, the shape of the curling part cannot be changed due to the movement of a patient, and the phenomenon of the slippage of the drainage catheter cannot be caused.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features of the utility model described herein.

Claims (9)

1. The utility model provides a pigtail drainage catheter, includes pigtail curly section (1), drainage tube pipe shaft (2), pigtail curly section (1) one end is equipped with drainage tube pipe shaft (2), its characterized in that: the drainage tube body (2) other end is equipped with outer joint (3), outer joint (3) other end is pegged graft and is had nipple (5), and fixing base (4) overlap on outer joint (3), set up recess (9) on nipple (5), be equipped with sealing member (7) in recess (9), the other end of recess (9) is equipped with wire casing (10), and pull wire (6) one end passes outer joint (3) and passes the hole of stepping down of sealing member (7) forward and wears out the coiling from wire casing (10) and connects in pull wire handle (8) through-hole from pigtail curls section (1).

2. The pigtail drainage catheter of claim 1, wherein: the pigtail curly section (1) comprises a drainage side cavity and at least 2 threading holes, wherein the drainage side cavity is of an oval structure, the drainage side cavity is provided with at least 4 threading holes which are of a circular structure, and the threading holes are provided with at least 2 threading holes.

3. The pigtail drainage catheter of claim 1, wherein: one end of the inner joint (5) connected with the outer joint is an inner joint a end (11), the inner joint a end (11) is of a cylindrical structure, a rectangular drawing groove is formed in the end face of the inner joint a end (11), and the groove (9) is formed in the drawing groove.

4. The pigtail drainage catheter of claim 3, wherein: the sealing member (7) is a silica gel strip, the top of the sealing member (7) is of an arc-shaped structure, the top of the sealing member (7) is of an arc-shaped surface, the arc-shaped surface and the arc surface of the drawing groove are arranged in parallel, and the bottom of the sealing member (7) is attached to the bottom of the groove.

5. The pigtail drainage catheter of claim 3, wherein: at least two yielding holes are formed in the sealing element (7), and the aperture of each yielding hole is smaller than the line diameter of the pull line (6).

6. The pigtail drainage catheter of claim 1, wherein: the inner joint (5) is provided with a table top which is tightly attached to the outer joint.

7. The pigtail drainage catheter of claim 1, wherein: the other end of the inner joint (5) is an inner joint b end (12), and the inner joint b end (12) is in an outer cone joint structure.

8. The pigtail drainage catheter of claim 6, wherein: the table top is of a prismatic structure and is attached to the gear inside the pull wire handle (8).

9. The pigtail drainage catheter of claim 1, wherein: the outer joint (3) both ends include outer joint A end (13) and outer joint B end (14), inner joint (5) are inserted to outer joint (3) in from outer joint A end (13), and the terminal surface of outer joint A end (13) is laminated with the mesa of inner joint mutually, and outer joint B end (14) department is equipped with the fixing base draw-in groove, and the fixing base draw-in groove is the excessive type structure of toper.

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