JPH07503627A - Cryogen probes or improvements thereto - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] TECHNICAL FIELD This invention relates to cryosurgical instruments. General practitioners for outpatient treatment of skin diseases such as acne scars and pigmented nevi. Particularly related to portable cryogen probes used by other doctors and others. That's it Such a device is a contact procedure in which the supercooled tip is applied directly to the surgical area. or a spray device in which a spray of freezing agent is applied to the relevant parts. It's okay to do that. In this specification, the word "probe" refers to both types of devices. should be understood as such.

The known probe is attached to a cryogen supply device, and the probe body and brass It consists of the tip of the The disadvantage of probes like the brass is that the brass is expensive and The tip must be disinfected before each use.

It is an object of the present invention to eliminate and/or alleviate these and other disadvantages.

According to one aspect of the invention, the tip is releasably secured to the probe body. A probe tip is provided for an adapted cryogen probe.

According to another aspect of the invention, the tip is releasably secured to the probe body. A cryogen probe consisting of a probe tip and a probe body adapted to bu will be provided.

Preferably, the probe tip has a diameter for securing the probe tip to the probe body. Includes means of securing. Its means of securing are tips and books adapted to cooperate with each other. It may also include cooperating configurations provided on the body. Preferably, the means of securing it. is a thread on the tip adapted to mate with a corresponding thread on the probe body includes. The threads on the tip of the probe are internal, and the threads on the body are external. It is okay to be in

In a preferred form, the probe tip includes a main portion and a head portion extending from the main portion. It may be composed of. Its main part is a suitable plus, e.g. acetal. 《And the head portion may be formed from a material that is cooled to the body tissue at a supercooled temperature. It may be formed from any suitable material for use in contact. The head part is an example For example, it may be formed from a metal material such as brass.

The probe body may consist of an extension that is threaded.

Exhaust means may be provided to evacuate vaporized cryogen from the probe. desirable Alternatively, the exhaust means may consist of an exhaust pipe protruding from the probe body.

Embodiments of the invention will be explained by way of example only with reference to the accompanying figures: Figure 1 is a cross-sectional view of the probe tip; Figure 2 is a diagram of @ll-11 in Figure 1. Figure 3 is a cross-sectional view of the probe body. and FIG. 4 is a diagram about line IV-IV in FIG.

1 and 2, a probe tip 1111 extending from the main portion 12 and the head portion 14 0 is shown. The main portion 12 has a bore extending from one end 18 to the head portion 14. It has a hole 16.

Main portion 12 has internal threads extending from end region 18 toward head portion 14 . Includes 20.

The main portion 12 is formed from a suitable plastic material, such as, for example, acetal; Head portion 14 is then formed from a suitable metallic material, such as brass.

By forming the main portion 12 from an inexpensive plastic material, the probe tip l O becomes disposable.

A new tip is therefore available for use for each separate cryosurgical treatment.

This possibility guarantees a high standard of hygiene and the risk of chain contamination between consecutive patients. remove gender.

FIG. 3 shows a probe body 30 having a bore hole 32 extending therethrough. . A portion 34 extending from one end of the body 30 is located on the main portion 12 of the probe tip IO. It is equipped with an external thread 36 that can be engaged with the threaded part 20 by a screw. , the probe tip 10 can be secured to the main body 30.

The other end of the probe body 30 is equipped with a suitable cryogen supply device (Fig. (not shown). Ru.

The probe body 30 communicates with a bore hole 32 and extends through the bore hole 32. Also provided is an exhaust pipe 38 having a diameter of 40.

In use, the probe tip 10 is screwed onto the extension of the body 30 and attached to the body. The tip 10 is secured in register with its associated bore 16.32. So further Threaded portion 42 is screwed onto a suitable cryogen supply device (not shown). can be attached. The cryogen (e.g. liquid nitrogen) is then passed through the borehole from the cryogen supply device. 32 and into contact with the trowel head portion 14, which is threaded into the bore hole 16. It vaporizes. The head portion 14 is therefore supercooled.

The vaporized freezing agent is then exhausted through the bore hole 4 of the exhaust 'f38.

The supercooled head portion 14 can then be applied to tissue on the skin for surgical excision. Wear.

Modifications may be made to the probe without departing from the scope of the invention. For example, within One external thread is on the probe body and one external thread is on the probe tip. It is also possible to reverse the threads that secure the probe tip to the probe body. be. The probe tip and body portion differ from those described and shown. It may be configured as follows.

drawing attention to those features of the invention that are considered to be of particular importance; has been attempted in the aforesaid specification, on which special emphasis is placed by the applicant. However, any patentable features or features previously mentioned and shown in the figures or It should be understood that protection is also claimed for any combination of features. It is possible.

Claims (8)

[Claims] 1. A cryogen probe consists of a probe tip and a probe body. is adapted to be releasably secured to the probe body. probe. 2. The tip has threads adapted to engage with corresponding threads on the probe wood. Claim 1, characterized in that it includes a securing means consisting of: probe. 3. The probe tip consists of a main part and a head part. According to any one of claims 1 and 2, the range extends from probe. 4. Claim 3, characterized in that the main part is formed from a plastic material. Probes described in Section. 5. The main part is formed from acetal, and the head part is formed from true ■ The probe according to claim 4, characterized in that: 6. further including exhaust means for evacuating the vaporized cryogen from the probe; A probe according to any of the preceding claims, characterized in that the probe has the following characteristics: 7. The probe has been fully described previously with reference to the accompanying drawings. 8. be within the scope of the same invention as or related to any of the preceding claims; new material, or combinations containing novel material disclosed;