CN207562212U

CN207562212U - A kind of catheter

Info

Publication number: CN207562212U
Application number: CN201720570070.XU
Authority: CN
Inventors: 向彬
Original assignee: GUANGZHOU WELL LEAD MEDICAL INSTRUMENTS CO Ltd
Current assignee: GUANGZHOU WELL LEAD MEDICAL INSTRUMENTS CO Ltd
Priority date: 2017-05-22
Filing date: 2017-05-22
Publication date: 2018-07-03
Anticipated expiration: 2027-05-22

Abstract

The utility model discloses a kind of catheters, including pipe shaft, the atria being set in pipe shaft, it is set to pipe shaft upper end and enters the porus excretorius of atria for drainage of urine, it further includes the sacculus being fixed on pipe shaft, the first bonding position of pipe shaft and the second bonding position, the full chamber being set in pipe shaft is fixed on for sacculus, the pipe shaft is additionally provided with the full opening for full chamber to be made to be connected with balloon interior, and the sacculus is preforming capsule.The utility model is fitted in the preforming sacculus that fold is formed on pipe shaft by setting under contraction state, it is possible to prevente effectively from being damaged to human body, improve urine-leakage performance.

Description

A kind of catheter

Technical field

The utility model is related to medical instruments field more particularly to a kind of catheters.

Background technology

Health care usually needs to use Foley catheters, is made of pipe shaft, sacculus, full chamber, atria.Pipe shaft There are one full chamber, the sacculus being connected and fixed on by an opening on tube wall on pipe shaft.The effect of sacculus is more to ensure Catheter can be mechanically anchored in bladder.In addition, when catheter is placed in opening of bladder, sacculus has certain sealing function, Urine can be prevented to flow out bladder, prolong urethral catheterization pipe outer wall outflow urethra.

At present, the balloon material for commonly using catheter is latex and silica gel, by elastic swollen when this kind of material with water is full Bulging plays fixed function into sacculus at opening of bladder.However, after catheter use, by elastic expansion and holding one The sacculus of section time can not be fully retracted on pipe shaft.The loss of elasticity is since after balloon inflation, meeting is by urine Chemical composition (such as uric acid) accelerates hardening.Particularly with the catheter of latex matrix, after people's intracorporeal indwelling long period, sacculus It will appear apparent hardening due to being in urine environment.When emptying sacculus, the sacculus of latex or silica gel material can not be complete Not full state is replied, there are remaining rough pleats or protrusion, injured patient's urethra when causing the catheter to remove.In addition, When silica gel material is used to make sacculus, since silica gel material has good gas permeability, water can penetrate ball during use Capsule, in order to ensure sacculus is fully filled to play fixed function, it usually needs frequently repeat Filled Balloon, increase medical care people The workload of member.

Usually there is ball askew phenomenon in conventional pilot catheter balloon one of shortcoming when being balloon inflation, and by a little It is easily ruptured in the case of lateral external force.Sacculus at the opening of bladder fixed stability can it is askew because of ball caused by it is apparent bad It influences, leads to leakage of urine.Another of traditional structure catheter sacculus is the disadvantage is that, need to be formed by injecting fluid elastic expansion Sacculus, therefore the sacculus of working condition can form tube wall certain pressure, may lead to the contraction of tube body atria, reduction is drawn Flow efficiency.The sacculus of high pressure can also stimulate the region of bladder and urethral orifice simultaneously simultaneously, cause tissue injury and promote pressure Property ulcer.

Utility model content

The purpose of this utility model is to provide a kind of catheter, it is possible to prevente effectively from being damaged to human body, improves leakproof Urinate performance.

To realize the purpose, a kind of catheter is provided, including pipe shaft, the atria being set in pipe shaft, is set to pipe End enters the porus excretorius of atria for drainage of urine with it, further includes the sacculus being fixed on pipe shaft, is fixed on pipe for sacculus First bonding position of body and the second bonding position, the full chamber being set in pipe shaft, the pipe shaft are additionally provided with to make full chamber The full opening connected with balloon interior, the sacculus are preforming capsule.

Preferably, it is fitted on pipe shaft under the sacculus contraction state and forms fold, be ball under the sacculus expanded state Shape or ellipsoid is cylindric or flat disk like or coniform.

Preferably, the sacculus wall thickness is 5-30 μm, and ball intraluminal pressure is 50-200mbar under expanded state.

Preferably, the sacculus shore hardness is 70-95.

Preferably, the sacculus is made of high molecular material.

Preferably, the sacculus is made of polyurethane or nylon or polyethylene terephthalate or polyvinyl chloride.

Preferably, silver particles or antimicrobial coating are coated on the tube body and sacculus.

Preferably, the tube body is made of polyvinyl chloride or polyurethane.The utility model is compared with prior art, beneficial Effect is：

The utility model is fitted in the preforming sacculus that fold is formed on pipe shaft by setting under contraction state, can be effective It avoids damaging human body, improves urine-leakage performance.The utility model fills sacculus by using air, not After expanded state and exhaust, the fold of formation can be fitted closely in catheter pipe shaft, will not dramatically increase outer tube diameter, urethral catheterization Pipe will not injured patient's urethra when passing in and out human body；Preforming sacculus is when filling to working condition, the preset body of volume ratio Product is smaller, and the pressure inside and outside sacculus is essentially identical so that it can adjust own form and meet anatomical structure, ball as far as possible The structural area of capsule contact trigone of urinary bladder is 30% or so of surface area, realizes good sealing performance, effectively prevent Leakage of urine phenomenon reduces cystelcosis.

Description of the drawings

Fig. 1 is the utility model contraction state lower structure schematic diagram；

Fig. 2 is the utility model expanded state lower structure schematic diagram.

Specific embodiment

With reference to embodiment, the utility model will be further described, but does not form to any of the utility model Limitation, the modification of any limited number of time made in the utility model claims range, still in the claim of the utility model In the range of.

As Figure 1-Figure 2, the utility model provides a kind of catheter, including pipe shaft 1, the row being set in pipe shaft 1 Urocoel 9 is set to the porus excretorius 6 that 1 upper end of pipe shaft enters atria 9 for drainage of urine, further includes the sacculus being fixed on pipe shaft 1 2nd, the first bonding position 4 and second that pipe shaft 1 is fixed on for sacculus 2 bonds position 5, the full chamber 7 being set in pipe shaft 1, pipe shaft 1 The full opening 8 for full chamber 7 to be made to be connected with 2 inside of sacculus is additionally provided with, sacculus 2 is preforming capsule.

In the present embodiment, by first bond position 4 and second bond position 5 by the both ends of sacculus 2 bond on pipe shaft 1, The static volume of residue of this fixed sacculus 2 of mode can be less than 0.05ml, and can reach about 0.01ml to about In the range of 0.03ml.Using bonding agent, such as heating or solvent when bonding, ultrasonic bonding or other known bonding skill are recycled Art is bonded.After sacculus station is connected to pipe shaft, first, which bonds position 4 and second, bonds position 5 and the smooth of the edge of pipe shaft 1 so that The transitional region of pipe shaft 1 and sacculus 2 does not have apparent step, therefore balloon portion will not damage trouble during human body is passed in and out The urethra of person.Sacculus 2 after contraction may include pattern-free and irregular gauffer 3.Gauffer 3 may prolong any direction extension. When sacculus 2 empties, gauffer 3 can be fitted tightly over the surface of pipe shaft 1, and such band-like gauffer will not be damaged when sacculus passes through urethra Hinder patient's urethra.Required overall space is formed in order to reduce fold as far as possible, sacculus 2 is mounted on pipe in the form of portrait orientation With, first, which bonds position 4 and second, bonds position 5 apart from as far as possible.

In the present embodiment, it can be round or square or rectangle to fill opening 8.So as to prevent sacculus 2 thin Film blocks.

Formation fold 3 is fitted on pipe shaft 1 under 2 contraction state of sacculus, be spherical under 2 expanded state of sacculus or ellipsoid or Cylindric or flat disk like or coniform.2 wall thickness of sacculus is 5 μm, and pressure is 50-200mbar in sacculus 2 under expanded state.Ball Capsule 2 is made of high molecular material, shore hardness 70-95.Sacculus 2 is polyurethane or nylon PA or poly terephthalic acid second two Alcohol ester PET or polyvinylchloride are made.Silver particles or antimicrobial coating are coated on tube body 1 and sacculus 2.Tube body 1 for polyvinyl chloride or Polyurethane is made.

In the present embodiment, 2 wall thickness of sacculus can be by allowing fold to be calculated by elastic expansion to working volume Selection.Preforming sacculus 2 with 5mL working volumes, wall thickness range are 5-10 μm.It is 30mL's in specific working volume When, the wall thickness of sacculus is in the range of 5-15 μm.When polyurethane is used to make sacculus 2, not full sacculus 2, wall thickness It is by ensureing ranging from 100% to the 200% of the volume expansion of sacculus 2, and no more than the safety of 200 to about 250% Range is selected.2 wall thickness of sacculus as needed may be 18 μm or 20 μm or 25 μm or 30 μm.

In the present embodiment, the material of sacculus 2 can include polyurethane (PU), low density polyethylene (LDPE) (LDPE), polychlorostyrene second Alkene (PVC), polyamide (PA) or polyethylene terephthalate (PETP).These materials are all bio-compatibles, and It is suitable for doing sacculus when being processed into relatively thin form.Low density polyethylene (LDPE) and vinyl-vinyl acetate copolymer (LDPE-EVA) or above-mentioned copolymer material is it is also contemplated that as additive.These materials have in working condition There is good fixed function, apparent flexible deformation will not occur and catheter is caused to be deviate from from human urethra.Poly- ammonia is selected again After ester is as balloon material, the sacculus 2, first prepared with the blow moiding method of high quality bonds the bonding position 5 of position 4 and second, can obtain To uniform, smooth, high quality surface texture, fouling of the urethra substance on pipe shaft is reduced, reduces bacterial reproduction.

In the present embodiment, when sacculus 2 is in expanded state in bladder, the volume of sacculus 2 is slightly less than pre-designed ball 2 volume of capsule, i.e. sacculus are not exclusively full.The balloon pressure of working condition is isobaric with surrounding air, i.e. the external and internal pressure of sacculus 2 is big It causes to be equal, pressure is only 50-200mbar.Such case by enable sacculus configuration anatomy be covered in trigonumvesicae In area 10 and internal urethral orifice 11 is filled, at least 30% surface of balloon membrane can contact the Urinary Bladder knot of patient anatomy 60% surface of structure or even balloon membrane can contact the Urinary Bladder structure of patient anatomy.Sacculus 2 can be effectively improved to urinate Leakproofness inside road junction 11, urine can be reduced by the leakage of sacculus, be reduced since the fluid between urethra and bladder circulates, Inflammation-induced bacterium can be reduced.Sacculus 2 is filled in 10 part of trigone of urinary bladder, and the power adjustment sacculus 2 of very little can be used to meet Anatomy will not cause bladder structure to generate ulcer to cover trigone of urinary bladder 10.Since sacculus 2 is along trigone of urinary bladder 10 uniform surface contacts, tissue injury caused by reducing or eliminating pressure associated with prior art conduit and promotion pressure Property ulcer.

In the present embodiment, filled with gas pre- than previously given geomery smaller, sacculus 2 when sacculus 2 fills It is molded between the 60%-80% of volume.Therefore, sacculus 2 is soft in working volume state, does not expand, makes completely Trigone of urinary bladder 10 can be fully taken up by obtaining sacculus, and a part of of sacculus 2 can be moved to trigone of urinary bladder 10 and urethra or urine The transitional region at road junction 11.

In the present embodiment, when applying axial outside tractive force from bladder, sacculus 2, which will adapt to oneself, becomes circle Geometry is bored as shown in Fig. 2, therefore more secured at trigone of urinary bladder 10 and urethral orifice 11.In such a tractive force Under, 2 surface of sacculus to urethral orifice 11 can form a concave surface, prevent leakage of urine phenomenon.

In the present embodiment, tube body 1 and sacculus 2 coat silver particles or antimicrobial coating, can improve scaling property energy.It will apply 2 surface of layer coating sacculus, the inside and outside wall of pipe shaft 1, and can be completed by impregnating.Since coating is freely filled in sacculus 2 In the state of coat, when sacculus 2 is in working volume state, that is, be not pressurized under not expansion state, silver particles can be in the greatest extent Possible high density.Meanwhile anti-inflammatory effect can also get a promotion.In addition, sacculus 2 can also be filled comprising preservative or antibacterial The liquid of agent, when sacculus 2 is used as full medium, the polarity charged molecule of solution and migrate across balloon membrane.

It the above is only the preferred embodiment of the utility model, it should be pointed out that for those skilled in the art, Under the premise of not departing from the utility model structure, several modifications and improvements can also be made, it is new that these all do not interfere with this practicality The effect and practical applicability that type is implemented.

Claims

1. a kind of catheter, including pipe shaft (1), the atria (9) being set in pipe shaft (1), it is set to pipe shaft (1) upper end and is used for Drainage of urine enters the porus excretorius (6) of atria (9), which is characterized in that further includes the sacculus (2) being fixed on pipe shaft (1), is used for Sacculus (2) is fixed on the first bonding position (4) of pipe shaft (1) and second and bonds position (5), the full chamber being set in pipe shaft (1) (7), the pipe shaft (1) is additionally provided with to make the full opening (8) connected inside full chamber (7) and sacculus (2), the sacculus (2) it is preforming capsule.

2. a kind of catheter according to claim 1, which is characterized in that be fitted in pipe under sacculus (2) contraction state Fold (3) is formed on body (1), is spherical under sacculus (2) expanded state or ellipsoid is cylindric or flat disk like or circle Taper.

3. a kind of catheter according to claim 1 or 2, which is characterized in that sacculus (2) wall thickness is 5-30 μm, is filled Sacculus (2) the interior pressure under state that is full of is 50-200mbar.

4. a kind of catheter according to claim 2, which is characterized in that sacculus (2) shore hardness is 70-95.

5. a kind of catheter according to claim 1 or 2, it is characterised in that be located at, the sacculus (2) is high molecular material It is made.

6. a kind of catheter according to claim 5, which is characterized in that the sacculus (2) is polyurethane or nylon (PA) Or polyethylene terephthalate (PET) or polyvinyl chloride (PVC) are made.

7. a kind of catheter according to claim 1 or 2, which is characterized in that coated on the pipe shaft (1) and sacculus (2) Silver particles or antimicrobial coating.

8. a kind of catheter according to claim 1 or 2, which is characterized in that the pipe shaft (1) is polyvinyl chloride or poly- ammonia Ester is made.