JPH08164142A - Flexible scalpel device for surgery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flexible scalpel device for surgery, especialy to be inserted into a colum and a body vessel. SOLUTION: A scallpel device has a tubular insertion part 12 and a scalpel 20 introduced into the insertion part 12. The insertion part 12 is made flexible while having an opening 16 at the tip thereof. The scalpel 20 sticks out through the opening 16 and, at this point, the scalpel 20 is guided through an inclined path 22 arranged in the insertion part 12 at a lower part of the opening 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible scalpel device for use in surgery, particularly for inserting into a body cavity and a body tube, having a tubular insertion portion and a scalpel introduced into the insertion portion. The insertion part has an opening at its tip, through which a scalpel can protrude, under which said scalpel can be guided through a ramp arranged in the guide part. It relates to a female device.

[0002]

2. Description of the Prior Art Scalpel devices having a tubular insert are known. Such devices are used, especially when performing visceral surgical procedures. At this time, care should be taken to minimize the invasiveness of the surgical procedure, avoid open surgery, and thus minimize such surgical intrusion into the patient. For example, stenosis that occurs in the ureteral segment has recently been surgically treated from the inside of the urinary tract. In particular, this procedure is problematic when performing a so-called ureteral incision to surgically remove such a stricture of the ureter. In this case, a well-known scalpel device is used, which is introduced subcutaneously, through the kidneys or through the urethra and bladder into the ureter.

However, a disadvantage of this known scalpel device is that it requires the use of an endoscope-like device, which has a rigid tubular insert with a scalpel guided therein. Due to the rigid structure of the insertion part, it is always difficult to insert a known scalpel device into the corresponding body cavity. Therefore, there is a concomitant increased risk of injury on the part of the patient. Furthermore, the operability of the operator is significantly impaired due to the rigid structure of the known scalpel device.

[0004]

SUMMARY OF THE INVENTION It is an object of the invention to provide a surgical scalpel device as claimed in the characterizing part of claim 1, whereby positioning within a body cavity is simplified. And to be able to do it safely.
To solve this problem, the features of the independent claims serve. Preferred embodiments are described in the dependent claims.

[0005]

SUMMARY OF THE INVENTION A flexible scalpel device according to the present invention uses a flexible insertion portion to quickly and easily position a scalpel device within a corresponding body cavity. Enable. In addition, the scalpel introduced into the flexible tubular insert is actuated by a flexible inner tube, which allows easy and precise operation of the scalpel device according to the invention. . The fact that the guide wire can be guided in the inner tube makes the positioning more precise.

In a preferred embodiment of the knife device according to the invention, a ramp is fixed in the insertion part and a wedge-shaped groove is provided, by means of which the knife is guided and supported reliably. I do. Therefore, the scalpel and the scalpel device as a whole can be accurately positioned at many positions in the body cavity.

In a further preferred embodiment of the knife device according to the invention, the knife is removably fixed to the inner tube. By detachably attaching the scalpel, if the scalpel becomes worn, it can be easily replaced at any time.

[0008] Other details, advantages and features of the invention will become apparent from the embodiments described hereinafter with reference to the accompanying drawings.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A scalpel device 10 according to the invention, shown diagrammatically in FIG. 1, has an insertion part 12, the tip 14 of which is provided with an opening 16 which is It is formed as a void in the tubular flexible insert portion 12. The insert 12 is formed as a tube with both ends open. The flexible inner tube 18 introduced to the insertion portion extends through the tube hole at the distal end. In the flexible inner tube 18,
A guide wire 24 is arranged. This guide wire 24 is
It helps to safely introduce the flexible scalpel device 10 into the correct position within a body cavity or body vessel. The introduction of the wire 24 and the insertion portion 12 is performed by X-ray control. Inner tube 18
The scalpel 20 is removably mounted on the mounting device 26 by the mounting device 26. The mounting device 26 is operated, for example, by a threaded ring. In this case, the scalpel 20 is formed such that its bulged end is a corresponding blade and its opposite end is a small end. A mounting device 26 is engaged with this small end of the scalpel 20. Since the scalpel 20 is detachably attached to the flexible inner tube 18, the replacement of the scalpel 20 can be performed without having to remove the entire flexible scalpel device 10. However, the scalpel 20 can have other shapes.

[0010] A ramp 22 is arranged in the insertion portion 12 below the opening 16. In this case, the ramp 22 is rigidly connected to the insertion part 12. The ramp 22 has a wedge-shaped groove into which a flexible inner tube 18 and a scalpel 20 fixed to the tube are introduced. An operating device (not shown) for operating the knife is provided at the end of the knife device 10 opposite to the tip 14. This operating device
The flexible inner tube 18 and the scalpel 20 fixed thereto are
It is formed so that it can be securely pushed into the insertion portion 12. A lock (not shown) for the inner tube 18 is arranged on the actuator. This lock can be, for example, a fastening screw. In addition, the actuator can be provided with another opening, which serves as a joining element of the cleaning device or for joining.

FIG. 2 is a schematic diagram of the flexible knife device 10 and shows a state where the knife 20 is raised. Flexible inner tube 18 with scalpel 2
When pushed toward the tip 14 of the zero, it can be seen that the swelling end of the scalpel 20, ie, the blade, protrudes from the opening 16.
At this time, the scalpel 20 is substantially 1-2
The millimeter protrudes to allow for incision or cutting of the ureter or other body cavity. Flexible inner tube 18
Into the wedge-shaped groove of the ramp 22, the scalpel 20 attached to the inner tube 18 by the attachment device 26 is
It is extruded from the opening 16. At this time, the body of the scalpel 20 rides on the ramp 22, while the flexible inner tube 18 is guided in the wedge-shaped groove of the ramp 22. The fact that the scalpel 20 is fixed to the inner tube 18 only at its small end provides positive movement and flexibility of the scalpel 20 with respect to the inner tube 18. The guide wire 24 is connected to the female device 10
Stays in the inner tube during operation of the
After positioning, the device can be separated from the body cavity.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a distal end of a flexible knife device according to the present invention.

FIG. 2 is a schematic diagram of a distal end of a scalpel device according to the present invention, showing a state where the scalpel is protruded.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Female device 12 Insertion part 14 Tip 16 Opening 18 Inner tube 20 Female 22 Rampway 24 Guide wire 26 Mounting device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eichi. Janitsky, Germany, Jänä, Hänengrund Bäguei (No house number)

Claims (5)

[Claims] A flexible scalpel device for surgical, especially insertion into body cavities and vessels, comprising a tubular insertion part (12).
And a scalpel (20) to be introduced into the insertion portion, wherein the insertion portion (12) has an opening (16) at its tip (14), through which the scalpel (20) is inserted. ) Can protrude, and at this time, the scalpel (20)
In a flexible scalpel device adapted to be guided on a ramp (22) arranged in the insertion part (12) in a lower part of the opening (16), said insertion part (12) is flexible. The scalpel (20) is formed and adapted to be actuated through a flexible inner tube (18) guided in an insertion portion (12), wherein the inner tube (1)
8) A flexible scalpel device characterized in that the guide wire (24) can be guided through 8). 2. The flexible knife device according to claim 1, wherein the ramp (22) is rigidly connected to the insertion part (12) and has a wedge-shaped groove. 3. The flexible knife device according to claim 1, wherein the knife (20) is detachably attached to the inner tube (18) by an attachment device (26). 4. The flexible scalpel according to claim 1, wherein the insert has a tubular structure with a circular cross section. 5. The flexible knife device according to claim 4, wherein the insertion part (12) is made of a metal piece and / or plastic which is spirally turned.