CN210409108U

CN210409108U - Peritoneal dialysis trocar

Info

Publication number: CN210409108U
Application number: CN201920897595.3U
Authority: CN
Inventors: 曾维瑜; 柏晓鑫; 邹倩; 张月莎; 王璘琪
Original assignee: Second Affiliated Hospital Army Medical University
Current assignee: Second Affiliated Hospital Army Medical University
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-04-28
Anticipated expiration: 2029-06-14

Abstract

The utility model belongs to the pjncture needle field specifically discloses a peritoneal dialysis trocar, including pjncture needle and sleeve pipe, the liftoff sliding connection of pjncture needle detachable is in the sleeve pipe, and the sleeve pipe is equipped with the grip outward, and liftoff sliding connection has the cover pad that covers intubate department on the grip, and the cover is stacked up and is equipped with the position and corresponding to the sheathed tube opening of stepping down. The grip sleeve is connected outside the sleeve in a sliding manner. The sleeve is disposed obliquely relative to the covering mat. One end of the sleeve, which is far away from the insertion end, is fixedly connected with an abutting flange, and one end of the holding sleeve, which is close to the abutting flange, is detachably and slidably connected with a chock block. The device can solve the problem that the intubation structure in the prior art causes discomfort to the patient when the patient moves.

Description

Peritoneal dialysis trocar

Technical Field

The utility model belongs to the field of puncture needles, in particular to a peritoneal dialysis trocar.

Background

Peritoneal Dialysis (PD) is to regularly and regularly inject prepared dialysate into the peritoneal cavity of a patient through a catheter by utilizing the characteristic that the peritoneum is used as a semi-permeable membrane through the action of gravity, and due to the concentration gradient difference of solutes on two sides of the peritoneum, the solute on one side with high concentration moves to one side with low concentration (dispersion action); the water moves from the hypotonic side to the hypertonic side (osmosis). The peritoneal dialysis solution is continuously replaced to achieve the purposes of removing in vivo metabolites and toxic substances and correcting water and electrolyte balance disorder.

The peritoneal dialysis is based on the principle that the peritoneal membrane is used as a dialysis membrane to separate dialysate filled into the peritoneal cavity from blood, the peritoneal membrane has the property of a semipermeable membrane and has the characteristics of large area, abundant capillaries and the like, and the blood and the dialysate in the capillary vessel cavity of the peritoneal membrane soaked in the dialysate are subjected to wide material exchange so as to achieve the purposes of removing in-vivo metabolites and toxic substances and correcting imbalance of water electrolytes and acid-base balance. In peritoneal dialysis, the solute exchange is mainly by diffusion and convection, and the removal of water is mainly by ultrafiltration by increasing osmotic pressure.

When acute and chronic renal failure is treated by peritoneal dialysis, a tube placing operation is usually adopted, the abdominal wall is cut at a position 3cm below the umbilicus until reaching the peritoneum, and the peritoneal dialysis tube is placed into the cysto-rectal crypt by using a ring clamp. The intubation process comprises the following steps: the puncture needle tip is used for puncturing the incision of the abdomen, liquid is injected into the needle core through the needle plug, the needle plug is connected with the infusion apparatus, the puncture needle and the outer sleeve are connected in a separable mode, the liquid in the needle core can flow into the abdominal cavity under the negative pressure effect of the abdominal cavity, the needle insertion is stopped, the abdominal cavity visceral organs are prevented from being injured, then the puncture needle is pulled out of the outer sleeve, the dialysis catheter is sent into the abdominal cavity through the outer sleeve, and the dialysis catheter is fixed for peritoneal dialysis treatment. Dialysis catheters are in the patient's body for a period of treatment that may be in excess of 4 years, with the patient having to be treated, thus requiring frequent replacement of the catheter for disinfection. The existing mode of changing medicine and sterilizing is generally to cover the cannula after sterilizing and dressing medicine by cotton cloth veil and then fix the cannula by adhesive tape. By adopting the mode, the veil adhesive tape is made of soft materials, so that the cannula body of the patient can swing easily in daily life, and the patient feels uncomfortable. The cannula is easy to be bent excessively, so that the liquid flow is affected during dialysis.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a peritoneal dialysis trocar to solve and use prior art's intubate structure can arouse patient's uncomfortable problem when the patient moves about.

In order to achieve the above object, the utility model discloses a basic scheme provides a peritoneal dialysis trocar, including pjncture needle and sleeve pipe, the liftoff sliding connection of pjncture needle detachable is in the sleeve pipe, and the sleeve pipe is equipped with the grip outward, and liftoff sliding connection has the cover pad that covers intubate department on the grip, and the cover is stacked up and is equipped with the position and corresponding to the sheathed tube opening of stepping down.

The principle of the basic scheme is as follows: the holding sleeve increases the holding area of the sleeve, and is convenient for an operator to hold. When the covering pad slides, the sleeve is positioned in the middle of the covering pad through the abdication opening, so that the covering pad can cover the cannula. The cover pad is connected to the grip sleeve in a sliding manner, so that the cover pad is convenient to replace, and the grip sleeve is supported on the cover pad, so that the angle of the sleeve is kept unchanged basically, and the cannula in the sleeve is prevented from being bent. Meanwhile, when the patient performs daily activities, the acting force of the clothes on the sleeve is transmitted to the covering pad, so that the sleeve is prevented from being influenced when being inserted into the body of the patient.

The beneficial effect of this basic scheme lies in: 1. the structure of this scheme is convenient for replace the cover pad as the cover to be convenient for replace the cover of intubate department, go on the medicine, cover the cover in intubate department once more.

2. The sleeve position is fixed, so that the phenomenon that the excessive bending of the sleeve causes the excessive bending of the cannula in the sleeve, and the liquid circulation is influenced during dialysis is avoided.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of the device without a covering pad.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments:

reference numerals in the drawings of the specification include: flange 1, chock 2, grip 3, cover pad 4, sleeve 5, pjncture needle 6.

Example (b): the peritoneal dialysis trocar in the scheme comprises a puncture needle 6, a covering pad 4, a holding sleeve 3 and a sleeve 5 as shown in figure 1, wherein the sleeve 5 and the covering pad 4 are made of medical silica gel, and the puncture needle 6 is inserted into a central hole of the sleeve 5 and is detachably connected with the sleeve 5 in a sliding manner. The holding sleeve 3 is tubular, and the sleeve 5 is inserted into the central hole of the holding sleeve 3 and forms sliding connection with the holding sleeve 3. The covering pad 4 is positioned below the holding sleeve 3, and the sleeve 5 is obliquely arranged relative to the covering pad 4 at an angle of 20 degrees.

As shown in fig. 2, a dovetail-shaped sliding groove is integrally formed at the upper part of the covering pad 4, and a sliding block corresponding to the dovetail-shaped sliding groove is integrally formed at the lower part of the grip sleeve 3, so that the grip sleeve 3 and the covering pad 4 are detachably connected in a sliding manner. Cover and fill up integrated into one piece and have the position to correspond to the opening of stepping down of sleeve pipe 5 on 4, conveniently cover and fill up 4 and slide, let and leave the observation space between opening and the sleeve pipe 5 of stepping down simultaneously, make things convenient for medical personnel to observe the condition of sleeve pipe 5 insertion department, be convenient for in time change dressings. The observation space can be covered by medical cotton at ordinary times, and the medical cotton can be taken down during observation.

One end integrated into one piece that sleeve 5 kept away from to insert the end has and leans on annular flange 1, holds sleeve 3 and is close to the one end that leans on flange 1 and is equipped with the chock 2 of U-shaped, and the opening width of chock 2 is greater than sleeve 5's diameter, forms the liftoff sliding connection of chock 2 and holding sleeve 3.

As shown in fig. 3, in use, the cannula 5 is inserted into the grip 3, and the puncture needle 6 is inserted into the cannula 5 to expose the needle tip. At the moment, the cushion block can take out the chock block 2, so that more sleeves 5 can be exposed, and the grip sleeve 3 is prevented from touching a patient when the incision is inserted. The puncture needle 6 together with the cannula 5 is inserted into the incision in the patient's body in position. Then, the puncture needle 6 is pulled out of the cannula 5, and the dialysis catheter is fed into the abdominal cavity through the cannula 5. At this time, the sleeve 5 is inclined by 20 °, and the dovetail groove on the covering pad 4 is fitted into the slider on the grip 3. At this time, because the chock 2 is not plugged between the holding sleeve 3 and the flange 1, the covering pad 4 has a larger distance from the body of the patient and can not touch the body of the patient when being connected with the holding sleeve 3, and the damage to the cannula is prevented. When the covering pad 4 slides in place, the holding sleeve 3 is put down to enable a gap to be formed between the holding sleeve 3 and the flange 1, and the plug block 2 is inserted into the gap between the holding sleeve 3 and the flange 1, so that the sleeve 5, the holding sleeve 3 and the covering pad 4 are integrated, and the stress of the sleeve 5 can be transmitted to the holding sleeve 3 and the covering pad 4. Meanwhile, the inclination angle of the holding sleeve 3 relative to the covering pad is small, so that the influence of clothes on the holding sleeve 3 when a patient moves is reduced, and the discomfort of the patient is reduced. The covering pad 4 is fixed on the body of the patient by using the medical adhesive plaster, and the whole operation process is completed.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. Peritoneal dialysis trocar, including pjncture needle and sleeve pipe, its characterized in that: the detachable sliding connection of pjncture needle is intraductal at the sleeve, and the sleeve is equipped with the grip outside the sleeve, and detachable sliding connection has the covering pad that covers intubate department on the grip, covers to stack up and is equipped with the position and corresponds to sheathed tube opening of stepping down.

2. The peritoneal dialysis trocar of claim 1, wherein: the grip sleeve is connected outside the sleeve in a sliding manner.

3. The peritoneal dialysis trocar of claim 1, wherein: the sleeve is disposed obliquely relative to the covering mat.

4. The peritoneal dialysis trocar of claim 3, wherein: the sleeve is inclined at an angle of 20-40 ° relative to the covering mat.

5. The peritoneal dialysis trocar of claim 4, wherein: one end of the sleeve, which is far away from the insertion end, is fixedly connected with an abutting flange, and one end of the holding sleeve, which is close to the abutting flange, is detachably and slidably connected with a chock block.

6. The peritoneal dialysis trocar of claim 1, wherein: the sleeve and the covering pad are both made of medical silica gel.