CN210158678U - Puncture outfit sleeve and positioning head thereof - Google Patents

Abstract

The utility model discloses a puncture outfit sleeve and a positioning head thereof, which comprises a base part and a bulge part which is integrated with the base part, wherein the base part is provided with a through hole which is suitable for being communicated with an inner hole of the puncture outfit sleeve; the bulge is integrally connected with one side of the base and is suitable for being inserted into an inner hole of the puncture outfit sleeve; the bulge is provided with a first through hole along the extension direction of the inner hole of the puncture outfit sleeve, and the first through hole is communicated with the through hole for forming. The puncture outfit sleeve of the embodiment can improve the adaptability of the surgical instrument which needs to pass through the puncture outfit sleeve for human tissue operation through the function of the positioning head, thereby improving the stability and the accuracy of the surgical instrument operation.

Description

Puncture outfit sleeve and positioning head thereof

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a puncture outfit sleeve pipe and location head thereof.

Background

Puncture instruments are widely used in abdominal examinations, abdominal surgeries, and other minimally invasive or surgical procedures. The puncture instrument can establish an access channel in the abdominal wall of the human body so as to allow a laparoscope or other surgical instruments such as guide wires, catheters and the like to enter the abdominal cavity for corresponding examination or surgical operation.

The puncture outfit overall structure comprises a puncture cannula and a puncture needle which are suitable for being inserted and connected, in the using process, the puncture needle is inserted into the human tissue mainly in the abdominal cavity after penetrating through the puncture cannula so as to establish the connection with the inside of the abdominal cavity, and at the moment, the puncture cannula establishes a channel which is suitable for the follow-up surgical instruments such as a guide wire, a catheter, an endoscopic forceps and the like to enter the inside of the abdominal cavity. At the moment, after the channel is established, the puncture cone is withdrawn from the puncture cannula, and then a guide wire, a catheter and the like are inserted into the puncture cannula and finally enter the inside of the abdominal cavity for corresponding operation process. In this case, it should be noted that, in actual use, the inner hole size of a general puncture cannula has the following three specifications: 5cm, 10cm or 12cm, which are matched with the puncture cone to facilitate the insertion of the puncture cone, and the three specifications are roughly classified according to the outer diameters of some machines commonly used in general puncture surgery, i.e. the 5cm diameter is suitable for instruments with smaller outer diameters, such as guide wires, and the 10cm and 12cm are suitable for instruments with larger outer diameters, such as catheters, but for guide wires, for example, the different specifications of the guide wires correspond to the outer diameters, and particularly, for guide wires with larger difference in outer diameter relative to 5cm, such as 2cm, such diameter may not form radial restraining force for the guide wires or the endoscopic forceps for operating the guide wires or the endoscopic forceps with the outer diameter of 2cm, which may result in that the guide wires or the endoscopic forceps cannot form radial restraining force for the guide wires or the endoscopic forceps from the end part of the guide wires held in the puncture cannula with the 5cm diameter, thereby resulting in that the operation end part of the guide wires or the endoscopic forceps is not fine, affecting the precision of the operation of the guide wire or the endoscopic forceps.

SUMMERY OF THE UTILITY MODEL

The first purpose of the utility model is to provide a positioning head to solve the technical problem of improving the stability of the operation process of inserting the surgical instruments into the human tissues through the puncture outfit sleeve.

The second objective of the utility model is to provide a puncture outfit sleeve pipe to solve the technical problem that improves the stability of surgical instruments in the operation process of inserting human tissues through the puncture outfit sleeve pipe.

The utility model discloses a location head realizes like this:

an alignment head adapted for use with a penetrator cannula comprising:

a base having a bore adapted to communicate with the bore of the penetrator cannula;

the bulge part is integrally connected with one side of the base part and is suitable for being inserted into an inner hole of the puncture outfit sleeve; the bulge is provided with a first through hole along the extension direction of the inner hole of the puncture outfit sleeve, and the first through hole is communicated with the through hole for forming.

In a preferred embodiment of the present invention, the outer sidewall of the protruding portion away from the first through hole is integrally formed with a damping thread so that the protruding portion is suitable for forming an interference fit with the inner hole of the puncture outfit casing.

In a preferred embodiment of the present invention, the card positioning head further comprises a pair of wing portions;

the pair of wing parts is integrally connected with the base part and symmetrically positioned on two sides of the bulge part, and the pair of wing parts are suitable for being respectively clamped and embedded into a pair of insertion grooves of the puncture outfit sleeve positioned on two sides of the inner hole.

In an optional embodiment of the present invention, a pair of arc-shaped limiting rings is disposed in the inner cavity of the first through hole along the radial direction of the first through hole, and a gap exists between two end portions of the pair of arc-shaped limiting rings;

the pair of arc-shaped limiting rings are provided with second through holes which are arranged along the axial direction of the first through holes and are suitable for surgical instruments to pass through;

and the pair of arc-shaped limiting rings are respectively connected with the inner hole wall of the first through hole through springs.

In an alternative embodiment of the present invention, the spring is a plurality of columnar spring bodies arranged along a radial interval of the first through hole.

In an alternative embodiment of the present invention, the spring is an arc-shaped spring body integrally disposed along a radial direction of the first through hole.

The utility model discloses a puncture outfit sleeve pipe is realized like this:

a puncture instrument cannula comprising:

the puncture outfit comprises a puncture outfit sleeve pipe body, a puncture outfit sleeve pipe body and a puncture outfit, wherein the puncture outfit sleeve pipe body is provided with an inner hole suitable for a puncture cone to pass through, and a pair of insertion grooves which are arranged at one end part of the puncture outfit sleeve pipe body far away from human tissues and are positioned at two sides of the inner hole;

the positioning head is adopted by the positioning head; the convex part of the positioning head is suitable for being inserted into the inner hole of the puncture outfit sleeve.

By adopting the technical scheme, the utility model discloses following beneficial effect has: the utility model discloses a puncture ware sleeve pipe and location head thereof, location head are suitable for and peg graft in puncture ware sheathed tube hole for the puncture awl is after withdrawing from puncture ware sheathed tube hole, and the adaptation problem between the puncture ware sleeve pipe of the surgical instruments of part and the aperture minimum of hole is coordinated through the aperture of the first through-hole of the bellying of location head. Compared with the puncture cannula with the smallest specification of the inner hole of the puncture outfit cannula, the puncture cannula with the smallest external diameter of the surgical instrument can be adjusted by the positioning head, so that the radial limitation of the part of the surgical instrument with the smaller external diameter, which is close to the holding end of the hand after passing through the puncture outfit cannula, is met, and the operation precision and stability of the surgical instrument in the puncture outfit cannula are improved.

Furthermore, a pair of annular spacing rings which are elastically connected with the inner hole wall of the first through hole through a spring are arranged in the first through hole of the protruding portion of the positioning head, the aperture of a second through hole which is used for limiting the surgical instrument and is formed by the first through hole of the protruding portion through a pair of arc-shaped spacing rings is achieved, the adjustment of the inner diameter of the second through hole can be achieved through the compression of the inner hole wall of the first through hole along with the limitation of a pair of arc-shaped spacing rings, and therefore the application range of the positioning head to the surgical instruments with different outer diameters is widened.

Drawings

Fig. 1 is a first schematic view of a positioning head of the present invention;

fig. 2 is a schematic cross-sectional view of a positioning head according to embodiment 1 of the present invention;

fig. 3 is a schematic view of an alternative embodiment of the positioning head according to example 2 of the present invention;

fig. 4 is a schematic view of an alternative embodiment of the positioning head according to example 2 of the present invention;

FIG. 5 is a schematic view of the configuration of the puncture instrument cannula from a first viewing angle;

FIG. 6 is a structural schematic view of the puncture instrument cannula from a second viewing angle;

FIG. 7 is a schematic structural view of a puncture instrument cannula fitted with the positioning head of embodiment 1;

FIG. 8 is a schematic sectional view showing the puncture device casing fitted with the positioning head according to example 1;

in the figure: the puncture outfit comprises a base part 1, a convex part 2, a through hole 3, a puncture outfit sleeve 5, an inner hole 6, a first through hole 8, a damping thread 9, a wing part 10, an insertion groove 11, an arc-shaped limiting ring 12, a second through hole 13, a gap 15, a columnar spring body 16, an arc-shaped spring body 17 and a surgical instrument 18.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

Example 1:

referring to fig. 1 and 2 and fig. 7 and 8, the present embodiment provides a positioning head suitable for a puncture device cannula 5, including: the base 1, boss 2 with base 1 integrated into one piece.

The base 1 has a through hole 3 adapted to communicate with the inner bore 6 of the penetrator cannula 5; the convex part 2 is integrally connected with one side of the base part 1, and the convex part 2 is suitable for being inserted into an inner hole 6 of a puncture outfit sleeve 5; the bulge 2 is provided with a first through hole 8 along the extension direction of the inner hole 6 of the puncture outfit casing pipe 5, and the first through hole 8 is formed by penetrating with the through hole 3. Alternatively, the aperture of the through hole 3 may be slightly larger than that of the first through hole 8, or the aperture of the through hole 3 may be the same as that of the first through hole 8.

Alternatively, a damping thread 9 is integrally formed on the outer side wall of the boss 2 facing away from the first through hole 8 to adapt the boss 2 to form an interference fit with the inner hole 6 of the penetrator cannula 5. The interference fit mode is beneficial to the rapid assembly and disassembly of the positioning head and the puncture outfit sleeve 5 in the operation process.

In order to further improve the radial stability of the positioning head after the positioning head is inserted into the puncture outfit casing 5, the positioning head of the embodiment further comprises a pair of wing parts 10; here, a pair of wing portions 10 are integrally connected with the base portion 1 and symmetrically located at two sides of the boss portion 2, and the wing portions 10 are adapted to be respectively inserted into a pair of insertion grooves 11 located at two sides of the inner hole 6 of the puncture outfit casing 5. The inserting groove 11 is a mechanism of the puncture outfit sleeve 5 and is fixedly matched with the puncture awl, and in the process of inserting the puncture awl with the puncture outfit sleeve 5 into human tissues, the stability of matching between the puncture awl and the puncture outfit sleeve 5 is improved, so that the wing part 10 of the positioning sleeve of the embodiment directly utilizes the inserting groove 11 of the puncture outfit sleeve 5, the wing part 10 is correspondingly developed and designed, and the problem of inconvenience in matching between the positioning head and the puncture outfit sleeve 5 is solved.

The specific implementation principle of the positioning head of the embodiment is that after the puncture cone exits from the inner hole 6 of the puncture outfit casing 5, the puncture outfit casing 5 with the outer diameter being smaller than the smallest specification size belongs to a smaller surgical instrument, the protruding part 2 of the positioning head is firstly inserted into the inner hole 6 of the puncture outfit casing 5, the pair of wing parts 10 of the positioning head is inserted into the insertion groove 11 of the puncture outfit casing 5, and then the surgical instrument is inserted into the first through hole 8 of the positioning head, so that the inner hole 6 wall of the first through hole 8 forms a radial limit for the surgical instrument.

Example 2:

referring to fig. 3 and 4, on the basis of the positioning head of embodiment 1, a pair of arc-shaped limiting rings 12 are disposed in an inner cavity of the first through hole 8 of the positioning head provided in this embodiment along a radial direction of the first through hole 8, and a gap 15 is respectively formed between two end portions of the pair of arc-shaped limiting rings 12; a pair of arc-shaped limiting rings 12 are formed with second through holes 13 which are arranged along the axial direction of the first through hole 8 and are suitable for the passing of surgical instruments; the pair of arc-shaped limiting rings 12 are respectively connected with the wall of the inner hole 6 of the first through hole 8 through a spring. The gap 15 can be increased along with the compression of the spring by the surgical instrument, when the spring is compressed, and when the gap 15 is increased, the inner diameter of the second through hole 13 formed between the pair of sliding limiting rings is also increased, so that the adjustment of the application range of the surgical instrument which is suitable for passing through the second through hole 13 can be realized.

In an alternative embodiment, the spring is a plurality of cylindrical spring bodies 16 arranged at intervals along the radial direction of the first through hole 8. In another alternative embodiment, the spring is an arc-shaped spring body 17 integrally arranged along the radial direction of the first through hole 8.

For the positioning head of the present embodiment, on one hand, a pair of annular limiting rings which are elastically connected with the wall of the inner hole 6 of the first through hole 8 through a spring are arranged in the first through hole 8 of the protruding portion 2 of the positioning head, so that the aperture of the second through hole 13 which forms a limiting for the surgical instrument and exists after passing through the first through hole 8 of the protruding portion 2 is further realized through a pair of arc-shaped limiting rings 12, and the adjustment of the inner diameter of the second through hole 13 can be realized along with the compression of the pair of arc-shaped limiting rings relative to the wall of the inner hole 6 of the first through hole 8, thereby improving the application range of the positioning head for the surgical instruments with different outer diameters. On the other hand, because elastic connection between the 6 walls of hole of a pair of annular holding ring and first through-hole 8 for under a pair of arc spacing ring 12 formed radial spacing to surgical instruments, the elasticity that can also utilize the spring comes the surgical instruments of being convenient for activity in radial direction, can not produce the flexibility ratio that the location head influences surgical instruments to surgical instruments's absolute spacing and use.

Example 3:

referring to fig. 5 to 8, on the basis of the positioning head of embodiment 1 or embodiment 2, the present embodiment provides a puncture device cannula 5, including: a puncture outfit cannula 5 body and a positioning head which is suitable for being connected with the puncture outfit cannula 5 body in an inserting way.

The puncture outfit sleeve 5 body is provided with an inner hole 6 for the puncture cone to pass through and a pair of insertion grooves 11 which are arranged at one end part of the puncture outfit sleeve 5 body far away from the human tissue and are positioned at the two sides of the inner hole 6; the positioning head of the embodiment can adopt the positioning head of the embodiment 1 or the embodiment 2; the boss 2 of the positioning head is adapted to be inserted into the inner bore 6 of the penetrator cannula 5. The pair of wing parts 10 of the positioning head are correspondingly inserted into the pair of inserting grooves 11.

The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only examples of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Claims (7)

1. A positioning head suitable for use with a puncture instrument cannula, comprising:

a base having a bore adapted to communicate with the bore of the penetrator cannula;

the bulge part is integrally connected with one side of the base part and is suitable for being inserted into an inner hole of the puncture outfit sleeve; the bulge is provided with a first through hole along the extension direction of the inner hole of the puncture outfit sleeve, and the first through hole is communicated with the through hole for forming.

2. The alignment head of claim 1 wherein the exterior sidewall of the boss facing away from the first throughbore is integrally formed with a damping thread such that the boss is adapted to form an interference fit with the interior bore of the penetrator cannula.

3. The alignment head of any of claims 1 or 2, further comprising a pair of fin portions;

the pair of wing parts is integrally connected with the base part and symmetrically positioned on two sides of the bulge part, and the pair of wing parts are suitable for being respectively clamped and embedded into a pair of insertion grooves of the puncture outfit sleeve positioned on two sides of the inner hole.

4. The positioning head according to claim 3, wherein a pair of arc-shaped limiting rings are arranged in the inner cavity of the first through hole along the radial direction of the first through hole, and gaps exist between two end parts of the pair of arc-shaped limiting rings respectively;

the pair of arc-shaped limiting rings are provided with second through holes which are arranged along the axial direction of the first through holes and are suitable for surgical instruments to pass through;

and the pair of arc-shaped limiting rings are respectively connected with the inner hole wall of the first through hole through springs.

5. The alignment head of claim 4, wherein the spring is a plurality of cylindrical spring bodies spaced radially along the first through hole.

6. The alignment head of claim 4, wherein the spring is an arc-shaped spring body integrally provided along a radial direction of the first through hole.

7. A puncture instrument cannula, comprising:

the puncture outfit comprises a puncture outfit sleeve pipe body, a puncture outfit sleeve pipe body and a puncture outfit, wherein the puncture outfit sleeve pipe body is provided with an inner hole suitable for a puncture cone to pass through, and a pair of insertion grooves which are arranged at one end part of the puncture outfit sleeve pipe body far away from human tissues and are positioned at two sides of the inner hole;

the positioning head adopts the positioning head as claimed in any one of claims 1 to 6; the convex part of the positioning head is suitable for being inserted into the inner hole of the puncture outfit sleeve.

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