JP3095092U - Catheter with reverse injection hole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a catheter capable of discharging all foreign substances out of the body, instead of pushing back foreign substances clogged in an affected part, causing damage to the affected part tissue. Provided is a catheter capable of extremely reducing the inflow and outflow of the catheter. Another object of the present invention is to
Providing a catheter that allows the operator to proceed with the work without holding the affected area, and provides a catheter that can be used even by a novice patient, regardless of the experience of using the catheter or the dexterity of the hands. To do. The catheter (1) has a plurality of liquid ejection holes (20) for ejecting a liquid from a tube (12), and the liquid is ejected in a direction substantially opposite to an insertion direction of the tube (12). This problem is solved by a catheter in which the shape of a parallel cross section of the injection hole 20 in the longitudinal direction of the tube is a substantially parallelogram.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention relates to a catheter, and more particularly, to a liquid in a direction opposite to the insertion direction of the catheter. A catheter having a reverse injection hole for injecting into

[0002]

[Prior art]

  Insert a catheter into the body cavity or bladder, urethra, trachea, esophagus, stomach, etc. It is a tubular medical device for discharging contents or injecting chemicals.

[0003]   There are various types of urine, which are appropriately selected depending on the affected area and the purpose of treatment. Inserting a thin tube into a patient who has a micturition disorder due to stones in the path Then, while ejecting the liquid from the tip of the tube, the urethra is artificially secured and reaches the bladder. There is a urethral catheter or the like that reaches the body and discharges urine from the body through the tube.

[0004]

[Problems to be solved by the device]

  However, existing catheters cannot push back foreign substances existing in the affected area or Since it is often the case that the Damage the affected tissue with the catheter itself, when inserting or pushing the catheter Foreign material between the catheter and the affected area scratches the affected tissue and the foreign material is buried in the affected tissue. Excessive fluid flushing of the catheter, caused by fluid pressure Leakage from wounds into other healthy tissue, catheter displacement or flushing of fluid In this case, the erosion and inflammation of the affected tissue must be maintained if the affected area must be held firmly at all times. There were various problems such as causing

[0005]   In addition, treatment using a catheter may result depending on the experience of the operator and the dexterity of the hands. It depends greatly, and in some cases the treatment may fail. It is the current situation.

[0006]   The present invention has been made to solve the above problems, and its main purpose is to: Instead of pushing back the foreign matter stuck in the affected area, on the contrary, remove all foreign matter from the body. It is to provide a catheter that can be delivered.

[0007]   Another object of the present invention is to remove the catheter that causes damage to the affected tissue. An object of the present invention is to provide a catheter capable of extremely reducing the insertion.

[0008]   Another object of the present invention is to allow an operator to proceed with work without holding the affected part. The object is to provide a catheter that can be used.

[0009]   Another object of the present invention is to improve the experience of treatment using a catheter and the dexterity of the hand. Regardless of the reason, we should provide a catheter that allows beginners to perform catheter treatment. And in.

[0010]

[Means for Solving the Problems]

  The present inventor does not push back the foreign matter stuck in the affected area or spread the thin tube. On the contrary, it is not possible to discharge all foreign substances to the outside, Is it possible to reduce the number of catheters that are causing this problem compared to conventional products? Also, is it possible for the surgeon to proceed without holding the affected area? From the point of view, the development was advanced and the present invention was completed.

[0011]   That is, the present invention has a plurality of liquid ejection holes for ejecting liquid from a tube. In the catheter, the liquid ejection hole is substantially opposite to the insertion direction of the tube. It is characterized in that it is open in the direction.

[0012]   Here, “substantially in the opposite direction” means that the liquid ejected from the liquid ejection hole is inserted into the tube. It means the direction in which the jet is ejected in the direction opposite to the direction. Not only the longitudinal direction opposite to the insertion direction, but also diagonally behind the tube insertion direction The direction is also included. However, in the radial direction of the tube (with respect to the insertion direction of the tube into the urethra Horizontal direction) is not included. The same applies hereinafter in this specification.

[0013]   The present invention also has a plurality of liquid ejection holes for ejecting liquid from the tube. A catheter, wherein the liquid ejection hole is oblique to the insertion direction of the tube. Therefore, it is characterized by having an opening at the rear.

[0014]   The present invention also has a plurality of liquid ejection holes for ejecting liquid from the tube. In the catheter, the liquid is ejected in a direction substantially opposite to the insertion direction of the tube. As described above, the liquid ejection hole is provided.

[0015]   The present invention also has a plurality of liquid ejection holes for ejecting liquid from the tube. A catheter, wherein the liquid is obliquely rearward with respect to the insertion direction of the tube. The liquid ejection hole is provided so as to be ejected.

[0016]   The present invention also has a plurality of liquid ejection holes for ejecting liquid from the tube. , A urethral catheter in which the liquid is jetted in a direction substantially opposite to the insertion direction of the tube The shape of a parallel cross section of the liquid injection hole in the longitudinal direction of the tube, It is characterized by being a substantially parallelogram.

[0017]   Here, “substantially parallelogram” means a parallel cross section of the liquid injection hole in the tube insertion direction. Assuming that the shape of is a quadrangle with four sides, two pairs of opposite sides are Quadrilateral parallel to each other and at least one pair of opposite sides In the case of a rectangular shape (for example, the shape of points a, b, c, and d shown in FIG. 2) Is also included. However, rectangles and squares are not included. The same applies hereinafter in this specification. To do.

[0018]   With such a configuration, it is possible to solve the above-mentioned problems, and Even beginners can easily treat regardless of their experience with tel surgery or their manual dexterity. You can

[0019]   In the catheter of the present invention, the wall thickness of the tube is 4 times the diameter of the tube. It is preferable to have a thickness of a fraction or more. In addition, the catheter of the present invention It is preferred that Further, the catheter of the present invention is preferably for cats. Good

[0020]

[Embodiment of device]

  Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 shows the present embodiment. It is an external view which shows the whole image of a urethral catheter. The urethral catheter of the present embodiment Le is configured as a catheter for cats.

[0021]   The catheter 1 of the present embodiment ejects the liquid introduced from the syringe 10. The distal end portion 12a of the hollow tube 12 is substantially opposite to the insertion direction of the tube 12. It has a plurality of liquid ejection holes 20 that are opened in the direction.

[0022]   On the other hand, the tube base end portion 12b is connected to the syringe 10. In addition, In addition to using a dedicated adapter, connect the tube and syringe to the proximal end of the urethral catheter. It is also possible to connect by forming the portions in a tapered shape.

[0023]   The tube 12 is preferably made of a flexible material. For example, polyethylene, polyurethane, silicone rubber, polyvinyl chloride, Examples thereof include Teflon (registered trademark).

[0024]   As for the diameter of the tube 12, it is assumed that the diameter of the urethra clogged with stones is 1.5 mmφ. And a diameter smaller than that, for example, 0.5 to 1.2 mmφ is preferable. More preferably, it is 0.8 mmφ.

[0025]   FIG. 2 is an enlarged view of the tube tip portion 12a in FIG. 1, and (A) is a urethral catheter. The top view of the tube tip portion 12a showing the liquid injection hole of the ether 1, (B) is the above (A) FIG. 4B is a cross-sectional view of the tube tip portion 12a shown in FIG.

[0026]   As shown in FIG. 2A, the tube tip portion 12a has a rounded tip a. The conical shape prevents damage to the urethral wall when inserting or pushing the catheter. It is supposed to stop.

[0027]   The liquid sent from the syringe 10 is placed on the peripheral wall surface 12c of the tube 12. A liquid ejecting hole 20 for ejecting to the outside of the tube 12 is formed, and a tube intermediate wall 2 described later is formed. 0d is exposed.

[0028]   The liquid injection hole 20 is formed from the point a at the tip of the tube in the tube tip 12a. Range up to the point B at the rear end of the liquid injection hole, specifically, 10 mm from the tube tip. It is preferably provided on at least a part of the peripheral wall surface of the enclosure.

[0029]   The number of the liquid ejection holes 20 is determined along the circumferential direction of the tube 12 within the above range. Although it can be set arbitrarily, the number is preferably 2 to 4.

[0030]   As a result, the self-propelled urethral catheter is promoted and the liquid is ejected from the liquid ejection hole 20. With the liquid thus formed, stones attached to the urethral wall can be discharged to the outside.

[0031]   The length of the liquid ejection hole 20 in the radial direction of the tube and the length of the tube in the longitudinal direction. In consideration of the number of liquid ejecting holes 20 and the pressure of the liquid ejected from the liquid ejecting holes 20, Can be set appropriately.

[0032]   Further, in the present embodiment, the liquid ejection hole 20 is formed in the tube tip portion 12a. However, the tube tip 12a and the tube base end are not limited to the tube tip 12a. 12b to form a liquid injection hole at any position to facilitate stone discharge You can also do it.

[0033]   Next, the structure of the liquid ejection hole 20 will be described. As shown in FIG. 2B, this embodiment Jet provided on the peripheral wall surface 12c of the tube 12 of the urethral catheter 1 in a standing state The hole 20 is cut in the longitudinal direction XX of the tube tip portion 12a in (A) described above. When viewed from above, the tube 12 penetrates the tube 12 in a substantially parallelogram shape.

[0034]   That is, the liquid ejection hole 20 in the present embodiment includes the tube outer wall 20a and the tube. The inner wall 20b of the tube and the tube connecting the outer wall 20a of the tube and the inner wall 20b of the tube. The sides defined by the tube middle walls 20c and 20d and formed by the point loaers, and the point hoses. The sides consisting of D are parallel to each other, and the side consisting of the point loho and the side consisting of the point Hani (That is, the tube intermediate walls 20c and 20d) face each other in substantially the same direction.

[0035]   In the present embodiment, the length of the side (tube intermediate wall 20d) formed by the point loft And the length of the side (tube intermediate wall 20c) formed by the point honey is different, but the same length It may be designed such that the two pairs of opposite sides are parallel to each other.

[0036]   As the length of the tube intermediate walls 20c and 20d is increased, the liquid injection hole 20 is , The tube will be opened in a direction approximately opposite to the insertion direction of the tube into the urethra, It is possible to inject in a direction substantially opposite to the insertion direction of the tube into the urethra.

[0037]   By increasing the length of the tube intermediate walls 20c and 20d, the liquid can be more or less reversed. The wall thickness of the tube 12 is one-fourth of the diameter of the tube 12 in order to inject in the opposite direction. The above is preferable, and specifically, if the tube is 1 mmφ, it is 0 ． It is preferably 25 mm.

[0038]   FIG. 3 shows that the liquid is ejected from the liquid ejection hole 20 provided in the urethral catheter 1 of this embodiment. It is a figure which shows the advancing direction of the liquid at the time of jetting.

[0039]   In this figure, the urethral catheter 1 of this embodiment is inserted from right to left. Then, the liquid sent from the cylinder 10 (not shown) to the tube tip portion 12a , The tube inner wall 20b, the tube intermediate walls 20c, 20d, and the liquid injection hole 2 From 0, it is ejected in a direction substantially opposite to the traveling direction of the urethral catheter 1.

[0040]   Thereby, the self-propelled urethral catheter 1 can be promoted in the urethra, Moreover, the liquid ejected from the liquid ejecting holes 14 removes stones attached to the urethral wall outside the body. Can be discharged to. In addition, the tube outer wall 20a is attached to the tube 12 in the radial direction. Since there is no step on the urethra, it does not damage the urethral wall when removing the urethral catheter 1. Yes.

[0041]   At this time, by appropriately changing the lengths of the tube intermediate walls 20c and 20d, Therefore, the angle of the ejected liquid can be changed.

[0042]   FIG. 4 is a schematic diagram illustrating a usage state of the urethral catheter 1 of the present embodiment. This Is an example of urinary stones 2 containing struvite as the main component in the urethra 20 of the penis P of a male cat. 2 shows a state in which the urethra 20 is closed.

[0043]   The tube 12 of the urethral catheter 1 of the present embodiment is inserted therein, and not shown. When the liquid is delivered from the syringe 10, the tube 12 of the urethral catheter 1 will Like a gut, it self-propels in the urethra while ejecting the liquid backward, While breaking, the collapsed stone 24 is pushed to the entrance of the urethra and discharged.

[0044]

[Effect of device]

  As described above, according to the urethral catheter of the present invention, the liquid ejection direction is controlled. Since it is almost opposite to the insertion direction of the catheter, push the foreign matter stuck in the affected area. It can be discharged outside the body without returning it. It may also cause damage to the affected tissue. The number of catheters in and out of the Wear.

[0045]   As an effect accompanying the above effect, it is possible to significantly reduce the operation time and It is also possible to treat without anesthesia.

[0046]   In addition, since the shape of the present invention prevents damage to the affected tissue, There is little artificial damage and the postoperative course is good. Moreover, the catheter Regardless of experience of surgery used or manual dexterity, even beginners can easily perform surgery become.

[0047]   Although the catheter of the above embodiment is described as a urethral catheter for cats, However, the present invention is not limited to this, and is widely used in general veterinary medicine and general medical care. It goes without saying that it can also be used as an ether.

[Brief description of drawings]

FIG. 1 is an external view showing an overall image of a urethral catheter of this embodiment.

FIG. 2 is an enlarged view of a tube distal end portion of the urethral catheter in FIG.

FIG. 3 is a diagram showing a traveling direction of a liquid when the liquid is ejected from a liquid ejection hole provided in the urethral catheter of the present embodiment.

FIG. 4 is a schematic diagram illustrating a usage state of the urethral catheter of the present embodiment.

[Explanation of symbols]

1: Urethral catheter, 12: Tube, 12a: Tube tip, 12b: Tube base, 20: Liquid injection hole, 20a: Tube outer wall, 20b: Tube inner wall, 2
0c, 20d: intermediate wall of tube, 20: urethra, 22: stone

Claims (6)

[Scope of utility model registration request] 1. A catheter having a plurality of liquid ejecting holes for ejecting a liquid from a tube, wherein the liquid ejecting hole is opened in a direction substantially opposite to an inserting direction of the tube. Let's say a catheter. 2. A catheter having a plurality of liquid ejecting holes for ejecting a liquid from a tube, wherein the liquid ejecting hole is opened obliquely rearward with respect to the insertion direction of the tube. Let's say a catheter. 3. A catheter having a plurality of liquid ejection holes for ejecting a liquid from a tube, wherein the liquid is ejected in a direction substantially opposite to an inserting direction of the tube,
The catheter, wherein the shape of the cross section of the liquid injection hole in the longitudinal direction of the tube is a substantially parallelogram. 4. The tube according to claim 1, wherein a wall thickness of the tube is ¼ or more of a diameter of the tube.
The catheter according to any one of 1. 5. The catheter according to claim 1, which is used for the urethra. 6. The method according to claim 1, which is for cats.
The catheter according to any one of to 5.