WO2016054713A1

WO2016054713A1 - Biopsy gun with two-stage trigger

Info

Publication number: WO2016054713A1
Application number: PCT/BR2015/050175
Authority: WO
Inventors: Eugênio Machado DE ANDRADE
Original assignee: Carbogel Indústria E Comércio Ltda.
Priority date: 2014-10-08
Filing date: 2015-10-07
Publication date: 2016-04-14
Also published as: BR102014025165A2

Abstract

"Biopsy gun with two-stage trigger" relates to an innovative item of equipment for withdrawing cellular material or a tissue fragment from a living being for the determination of a diagnosis, pertaining to the field of diagnostic medicine. The major drawback of biopsy gun models existing on the market is that it is necessary to use two hands in order to handle said guns, in addition to the fact that, owing to the deficiency in the actuation systems thereof, the physician encounters a degree of difficulty in using said guns, which translates into a greater risk of divergence and error when collecting tissue. In order to remedy this drawback, the subject matter of the present patent application, called a biopsy gun with two-stage trigger (1), has been developed, which is notable in that it has a structure such that it can be handled with just one hand, and is constituted on the basis of a rigid structure in which the upper portion (2) has a horizontalized rectangular prismatic form, with a grip (3) projecting down from the rear lower portion thereof. Surmounting the upper portion (2) there is a rectangular top cover (6) in which there is a rectangular viewer (32).

Description

"Biopsy Gun with Trigger

DOUBLE STAGE "

Field of the invention

The present invention patent relates to innovative equipment for the removal of cellular material or a tissue fragment from a living being for the determination of a diagnosis, within the field of diagnostic medicine.

Thus, the patent application in question has a biopsy gun specially designed and developed to be manipulated with one hand only.

It is, therefore, a product developed with perfection and efficiency, in order to offer a bi-stage trigger biopsy gun, providing great reliability to what it lends, both for its functional characteristics, and for the slightest suffering. imposed on the patient.

Invention History

Biopsy is a clinical examination modality consisting of the removal and pathological evaluation of tissue samples in the form of small fragments from the living body. They are extremely important for the doctor to make a diagnosis and observe the evolution of treatment. They are used not only for the diagnosis of neoplasms, but also for monitoring cases of transplanted organs, suspected organ and tissue insufficiency, monitoring of drug treatments, among others.

There are currently two types of biopsy: cytological and histological. Cytological biopsy is a puncture aspiration, performed through the use of a fine gauge needle. It is an incisive procedure, usually guided by ultrasound, to aspirate cysts or the contents of the nodule or tumor. Histological biopsy is a percutaneous procedure in which a small sample of the tissue where the lesion is located is collected through a coaxial needle system. The advantage of histological over cytological biopsy is that by obtaining a sample of excised rather than aspirated material, whole cell clusters are obtained instead of isolated cells. In addition, the material collected is highly concentrated and undiluted by tissue and blood fluids, as in aspirated biopsy. This facilitates the microscopic examination of the material, giving this biopsy modality greater reliability.

[006] The histological biopsy makes use of a device to protect the needles and aid in their handling, the handles, which are constituted by a body that serves as a guide for the slide of the cannula and the collecting needle. The needles and cannulae used in the procedure are disposable and designed for single use to ensure test efficiency, sterility and unquestionable safety against accidental inoculation. The handle of the instrument can be of two main types: disposable and non-disposable.

Among the disposable models are the semiautomatic guillotine needles, which are simpler instruments in their constructiveness, as it is a handle that is already attached to the needle itself.

Non-disposable models are similar to disposable handles, but are made of durable and sterilizable material, allowing the handle is used repeatedly after heat or gas sterilization.

Poor points of the prior art

[009] The major drawback of biopsy gun models on the market is the need to use both hands for handling, and the fact that due to the deficiency in their drive systems imposes some difficulty on the doctor making use of it. the greater the risk of deviations and failures at the time of tissue collection. As is well known to those skilled in the surgical field, biopsy specimen collection is a procedure that demands the surgeon's attention and precision, since it can be millimeter areas to be explored, and a minimal deviation can compromise the diagnosis.

[010] Another drawback noted is the incompatibility between the various needles and the biopsy handles or handguns on the market. It is necessary for the physician to have a compatible model for each different brand, caliber and length so that different types can be explored. of fabrics.

Summary of the invention

[01 1] It was thinking of these drawbacks that, after numerous researches and studies, the inventor, a person linked to the branch, created and developed the object of the present patent, idealizing a "DOUBLE STAGE TRACKING BIOPSY PISTOL" in which not only the mechanical and functional qualities were considered in the design of its manufacture, but also the shape, arrangement and location of its parts and components that, correctly positioned, brought an increase in the precision combined with utilitarian practicality.

[012] Thus, the present patent has been designed to obtain as few pieces of equipment as possible, conveniently configured and arranged to enable the dual stage trigger biopsy gun to perform its functions with unmatched efficiency and versatility, without the drawbacks already mentioned.

[013] Its innovative shape and design enables an excellent level of functionality to be achieved by providing a grip for the removal of cellular material or a tissue fragment from a living being for the determination of a diagnosis, the main innovations of which are:

[014] · Possibility to use any type of biopsy needle available on the market with a single trigger system (gun).

[015] · Collect soft tissue samples with penetration depths of 15 and 22mm.

[016] · Has a handle (stock), making it possible to use only one hand in the process of collecting and removing the soft tissue (or fragment) of the needle.

[017] · Allows the doctor to maintain the focus of the ultrasound image using only the left hand while removing the fragments with the right hand.

[018] · Trigger with lever system that makes it possible to arm and fire the system using less force, resulting in greater operator comfort.

[019] · Has trapezoidal or triangular rails to reduce friction and reduce resistance to needle penetration.

[020] · Allows the clinician (operator) to arm, fire and collect the fragment by repeating the operation as many times as necessary with just the right hand.

[021] · It has a damping system to reduce the noise caused by shooting in order not to scare the patient.

[022] · Ergonomic design to avoid "READ" -

Repetitive Strain Injury - The operator does not need to wring his hand during the process of introducing the needle and collecting fragments.

[023] · Less patient distress due to reduced time taken for fragment collection procedure.

[024] Impacts on the market:

[025] · Brazil's self-sufficiency in the production of a soft tissue collection device for biopsy.

[026] · Universal device that accepts all needles available on the international market.

[027] · Possibility of using only one hand to collect Fragments.

[028] · Great savings for clinics, public or private hospitals, and professionals.

[029] · Device that allows any form of sterilization.

[030] · Generation of work and income, because, due to its practicality and versatility will bring foreign currency to the country, not only due to exports, but also by the elimination of imports. [031] · Savings by allowing the doctor, hospital or clinic free choice of provider. It is estimated that this new process will save between R $ 10 and R $ 20 million per year, only by public hospitals, due to the fact that they may have a choice of needle supplier.

[032] · There are cases where up to 10 fragments are taken at a time for analysis.

[033] · Independence of imported products, with their prices in dollar or euro. A few years ago, during a customs inspector strike, some needle distributors / importers ran out of supplies, forcing users to buy needles and / or a new trigger from their available supplier subject to their prices.

[034] · Autoclave or chemical process.

[035] Impacts on society:

[036] · Universalization of soft tissue sampling procedures for biopsy, with gun and needle.

[037] · Allowing the physician to focus the ultrasound image with the left hand while the right hand proceeds with the removal of the various soft tissue samples.

[038] · Less patient distress due to reduced time taken for the fragment collection procedure.

[039] · Greater precision in taking samples.

[040] Designed with innovative design, it results in a harmonious ensemble, very peculiar in appearance and above all Apart from its constructive aspect, the product stands out for its versatility and convenience of use.

Brief Description of the Invention Drawings

[041] Following, for a better understanding and understanding of what constitutes the "Double Stage Trigger Biopsy Gun", which is claimed here, are the attached illustrative drawings, where it is shown:

[042] FIG. 1 - Shows a super-side perspective view of the dual stage trigger biopsy gun.

[043] FIG. 2 - Shows a top-back perspective view of the dual stage trigger biopsy gun.

[044] FIG. 3 - Shows a side view of the inner portion of the bi-stage trigger biopsy gun.

[045] FIG. 4 - Shows an exploded superfrontal perspective view of the dual stage trigger biopsy gun.

[046] FIG. 5 - Shows an inferolateral perspective view of the double-stage trigger biopsy gun mechanism.

[047] FIG. 6 - Shows a side view of the dual stage trigger biopsy gun mechanism.

[048] FIG. 7 - Shows an inferolateral perspective view of the double stage trigger biopsy gun mechanism.

[049] FIG. 8 - Shows a top perspective view of the displacement device that integrates the bi-stage trigger biopsy gun.

[050] FIG. 9 - Shows a super-front perspective view of the dual stage trigger biopsy gun with the top open.

[051] FIG. 10 - Shows a super-side perspective view of the dual stage trigger biopsy gun mechanism.

Detailed Description of the Invention

According to what the above related illustrations illustrate, the "DOUBLE STAGE TRIGGER BIOPSY GUN" object of the present invention is essentially characterized by a biopsy gun which can be manipulated with one hand only and for This has a two-triggered grip for cocking and firing the cannula and needle assembly.

[053] The double-stage trigger biopsy gun (1) is constructed from a rigid structure, the upper portion (2) of which has a horizontally prismatic rectangular shape, the lower rear portion of which is projected below a grip (3) tapering from top to bottom and its lower end (4) protrudes at an angle to the front portion, and from this end protrudes an arcuate structure (5) that connects to the lower face of the front end upper portion (2) constituted by the prismatic structure. Topped by the upper portion (2) is a rectangular top (6), which gives access to the inner portion for manipulation of the cannula (7) and needle (8). In said cover there is a rectangular sight (32), which allows to check if the gun is armed.

Internally to the upper portion (2) there is a cylindrical longitudinal axis (9), the rear end of which extends out of the rigid structure and has a cylindrical handle (11) indicating the needle (31). Said cylindrical handle (1 1) allows a 180 ° rotation to adjust the limit of longitudinal base movement for different needle penetration depths (15 and 22mm).

[055] In the cylindrical longitudinal axis (9) are coupled two bases in series, which are the front base (12) and the rear base (13), intermediated by coil springs (14) surrounding said cylindrical axis (9), the front base (12) having on its upper face the cannula (7) and the rear base (13) the needle (8), the movement of the front base (12) and rear base (13) is limited by semi-cylindrical stops (15) affixed to the cylindrical longitudinal axis (9), which when positioned downwards further limit the forward movement of the front (12) and rear (13) bases.

[056] The lower face of the front base (12) is coupled to a displacement element (16), the front portion of which is connected to a tensile coil (17), the other end of which is coupled to the rigid structure.

[057] Said displacement element (16) consists of a rectangular prismatic structure with rounded lower front and rear transverse edges, and in the posterior two thirds there is a rectangular longitudinal centered opening through which a flat shank passes through rectangular (18), whose front end is coupled to the displacement element (16) and the other end is coupled to the lower trigger (19), more precisely this rod projects backwards and downwards forming an arc that goes through the triggering trigger (20) until coupled to lower trigger (19). Still on the upper face of the displacement element (16) is a short flat rod (21) coupled thereto by means of a transverse pin and reassembled in a coil spring (22), with the rear end having a slight upward projection (23). Said lower trigger (19) has the function of cocking the cannula (7) and needle (8).

The rear base (13) has on its lower face a coupling rod (24), the portion of which precedes the rear end has a sinuosity (25).

[059] The trigger (20) has a geometry that resembles a triangular rectangle prism, but with irregular upper and lower faces, and in the rear portion has a horizontal cylindrical projection (26) surrounded by a coil spring ( 27) longer.

[060] Over the top face of the trigger trigger

(20) there is a vertical cylindrical pin (28) which moves as a function of this trigger.

[061] In the median portion of the longitudinal axis (9) there is a locking part (29) which has an inverted "L" shaped profile whose end of the horizontal portion has a small curved downward projection (30).

[062] It can thus be seen from the foregoing that the "DOUBLE STAGE TROUBLE BIOPSY PISTOL" in question is characterized as very useful equipment, having all the practical and functional qualities that fully justify the request. of invention privilege patent.

Claims

CLAIM:

1) "DOUBLE STAGE TAPPING BIPSY PISTOL" means a hand-held device for the removal of cellular material or a tissue fragment from a living being for the determination of a diagnosis, known models of the state of the art They have a rectangular prismatic structure, whose front end protrudes the cannula and needle assembly and the opposite portion has the buttons for their activation, which require the doctor to use both hands for their manipulation, besides have high operating noise and have no compatibility with the different models of needles and cannulas on the market, in order to solve these drawbacks the object of the present patent application called double stage trigger biopsy gun (1) was developed, characterized in that it has a one-handed structure which is constructed from a rigid structure, whose upper portion (2) has a horizontal rectangular prismatic conformation, from whose lower lower portion protrudes below a top-down tapering handle (3) and its lower end (4) angled towards the front portion, where an arcuate structure (5) protrudes from this end which connects to the lower face of the front end the upper portion (2) constituted by the prismatic structure; topped in the upper portion (2) is a rectangular top (6), in which there is a rectangular visor (32), and internally in that upper portion (2) there is a cylindrical longitudinal axis (9), whose rear end has a handle cylindrical (11), with an indication of the needle (31), the longitudinal axis cylindrical (9) together with the cylindrical handle (11) has a 180 ° pivoting movement, and in the cylindrical longitudinal axis (9) are coupled two bases in series, which are the front base (12) and the rear base ( 13), intermediate by coil springs (14) surrounding said cylindrical axis (9), with the front base

(12) It has on its upper face the cannula (7) and the posterior base

(13) the needle (8), the movement of the front base (12) and the rear base (13) are limited by semi-cylindrical stops (15) affixed to the cylindrical longitudinal axis (9), the underside of the front base (12) and coupled to a displacement element (16), wherein its front portion is connected to a tensile coil spring (17), the other end of which is coupled to the rigid structure, said displacement element (16) consists of a prismatic structure rectangular with the lower front and rear transverse edges rounded, and in the two posterior thirds there is a rectangular longitudinal centered opening through which a flat section rectangular rod (18), whose front end is coupled to the displacement element (16). ) and the other end is coupled to the lower trigger (19), more precisely this rod projects backwards and downwards forming an arc that passes through the trigger (20) until it is coupled. to the lower trigger (19), and still on the upper face of the displacement element (16) there is a short flat rod (21) coupled thereto by means of a transverse pin and reassembled in a coil spring (22), with the the rear end has a slight upward projection (23), the rear base (13) has its lower face a coupling rod (24), whose portion preceding the rear end has a sinuosity (25), the trigger ( 20) It has a geometry that resembles a rectangle triangle prism, but with irregular upper and lower faces, and in the posterior portion has a horizontal cylindrical projection (26) surrounded by a longer coil spring (27), over the upper face of the trigger (20) there is a vertical cylindrical pin (28) which moves as a function of the movement of the trigger (20), in the median portion of the longitudinal axis (9) there is a locking part (29) which has a profile inverted "L" shape whose end of the horizontal portion has a small downward curvilinear projection (30).