CN212368999U - Novel expansion pipe - Google Patents

Abstract

The utility model discloses a novel expansion pipe relates to backbone endoscope operation utensil technical field. The novel expansion pipe comprises an expansion pipe body, wherein a through hole is formed in the expansion pipe body; one end of the through hole is communicated with a conical hole; the end with the larger caliber of the conical hole is far away from the through hole. The novel expansion pipe of the utility model can realize convenient connection of the injector and the novel expansion pipe, and avoid anesthetic leakage.

Description

Novel expansion pipe

Technical Field

The utility model relates to a backbone endoscope surgical instruments technical field especially relates to a novel expansion pipe.

Background

At present, when a minimally invasive spine endoscope operation is carried out for establishing a channel, the commonly adopted methods comprise the following two methods:

firstly, positioning by using a puncture needle, pulling out a needle core of the puncture needle, inserting a guide wire, and then expanding step by step.

And secondly, directly inserting the pencil-point-shaped dilator for dilation.

However, when the two existing expanding devices are used, synchronous anesthetic feeding at the head end of the expanding channel cannot be performed in time during expanding, so that the operation steps are multiple, and the synchronous operation is not smooth. And the connecting portion that the expansion pipe is used for connecting the syringe among the prior art all is cylindrical, and its connection condition includes:

the diameter of the connecting part is smaller than that of the output end of the injector, the injector cannot be inserted into the connecting part, a large amount of leakage can be generated when the anesthetic is injected, the anesthetic effect is reduced, and the pain is brought to a patient;

the connecting part is in interference fit with the injector, so that the anesthetic can be prevented from leaking, but when the injector is connected or taken down, the large strength of medical staff is consumed, the operation is inconvenient, the time is wasted, and meanwhile, the pain is brought to a patient during the operation;

moreover, the diameter of the connecting part is larger than that of the output end of the injector, a gap is reserved between the connecting part and the output end of the injector, leakage can occur in the injection process, the anesthesia effect is reduced, and pain is brought to a patient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a novel expansion pipe, in use realizes the synchronous feed anesthesia, prevents that the anesthesia from revealing.

In order to solve the above problem, the utility model provides a:

the novel expansion pipe comprises an expansion pipe body, wherein a through hole is formed in the expansion pipe body; one end of the through hole is communicated with a conical hole; the end with the larger caliber of the conical hole is far away from the through hole.

Furthermore, the taper hole is used for connecting an output end of an injector to inject the anesthetic, wherein the diameter of the end with the larger caliber of the taper hole is larger than that of the output end of the injector, and the diameter of the end with the smaller caliber of the taper hole is smaller than that of the output end of the injector.

Furthermore, the diameter of the through hole is between 1.5mm and 2.5 mm.

Further, the diameter of the through hole is 1.8mm or 2.0 mm.

Further, the outer diameter of the expansion pipe body is 6.5 mm-12.2 mm.

Further, the outer diameter of the expansion pipe body is one of 6.5mm, 7.5mm, 9.2mm, 10.2mm and 12.2 mm.

Furthermore, the novel expansion pipe also comprises an expansion pipe head part which is arranged at one end of the expansion pipe body far away from the tapered hole; the outer diameter of the expansion pipe head is gradually reduced from one end close to the expansion pipe body.

Furthermore, one end, far away from the expansion pipe body, of the expansion pipe head is provided with a blunt surface, and the blunt surface is used for ensuring the safe feeding of the anesthetic.

Further, the projection of the head of the expansion pipe is in an isosceles trapezoid shape.

Furthermore, the included angle between the two waists after the head of the expansion tube is projected is between 30 and 60 degrees.

The utility model has the advantages that: the utility model provides a novel expansion pipe, wherein a through hole is arranged in the body of the expansion pipe, and one end of the through hole is communicated with a taper hole; thus, in use, the anesthetic can be administered by attaching the syringe to the tapered bore; the diameter of the conical hole is gradually reduced from outside to inside, so that the opening end of the injector can be gradually clamped when the injector is connected, and further, the leakage of anesthetic can be avoided; and the syringe is convenient to connect or take down, and the anesthetic can be synchronously fed while the syringe is expanded.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of the novel expanding tube according to a preferred embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the novel expanding tube according to a preferred embodiment of the present invention;

FIG. 3 is a schematic view showing the use of the novel expanding tube in feeding anesthetic in a preferred embodiment of the present invention;

FIG. 4 is a partially enlarged schematic view of portion A of FIG. 3;

fig. 5 is a schematic view showing the state of the novel dilating tube in cooperation with the kirschner wire according to a preferred embodiment of the present invention.

Description of the main element symbols:

100-expanding a tube body; 101-a through hole; 102-a tapered hole; 200-expanding the tube head; 201-blunt surface; 300-a syringe; 400-Kirschner wire.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

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 present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example one

As shown in fig. 1 to 2, the embodiment provides a novel expansion tube, which is mainly used for expanding the conduit in the spinal endoscopic surgery, so that the operation conduit meets the size requirement of the endoscope, and the spinal endoscopic surgery is convenient to carry out.

The novel expansion pipe comprises an expansion pipe body 100, wherein a through hole 101 is formed in the expansion pipe body 100; one end of the through hole 101 is communicated with a tapered hole 102. The taper hole 102 is coaxially arranged with the through hole 101; the end with the larger caliber of the taper hole 102 is far away from the through hole 101.

As shown in fig. 2 and 3, the caliber of the tapered hole 102 gradually decreases from outside to inside, and the cross section of the tapered hole 102 is an isosceles trapezoid structure. In use, the output end of syringe 300 may be secured directly within tapered bore 102.

The caliber of the tapered hole 102 can be set according to the size of the output end of the existing medical injector.

Specifically, the diameter of the larger caliber end of the tapered hole 102 is larger than that of the output end of the syringe 300, so that the output end of the syringe 300 can be inserted into the tapered hole 102 conveniently; the smaller diameter end of the tapered bore 102 has a diameter smaller than the diameter of the output end of the syringe 300, thereby facilitating the tapered bore 102 to gradually grip the output end of the syringe 300.

In use, when the output end of the syringe 300 is inserted into the tapered hole 102, the output end of the syringe 300 is continuously moved to a direction close to the through hole 101, and the diameter of the tapered hole 102 contacted by the output end of the syringe 300 is gradually reduced. When the output end of the syringe 300 contacts the tapered hole 102 with a smaller diameter than the diameter of the tapered hole 102, the tapered hole 102 will clamp the output end of the syringe 300, i.e. realize an interference fit between the two.

Therefore, the utility model discloses can make syringe 300 with realize sealing connection between the bell mouth 102, avoid taking place to leak at the junction of syringe 300 and novel expansion pipe when using syringe 300 to inject the anesthetic.

As shown in fig. 4, at the same time, there is only a short interference fit between the output end of the syringe 300 and the tapered bore 102; therefore, the syringe 300 can be attached to or removed from the tapered bore 102 without requiring significant effort by the medical practitioner. Thereby, the operation of medical personnel is convenient for, reduces the influence to the patient.

In the operation, medical personnel can expand the pipeline by using the novel expansion pipe so as to enable the pipeline to meet the size requirement of the endoscopic operation; meanwhile, the expansion tube body 100 can be connected with an injector 300 for synchronous anesthetic feeding, thereby saving operation time and relieving the pain of a patient. After the pipeline expansion is completed, the novel expansion pipe is taken out, and surgical instruments such as an endoscope and the like are inserted into the pipeline to perform subsequent operation. Therefore, the pipeline expansion process has good operation rhythm and hand feeling, the operation efficiency is improved, and the pipeline expansion device is particularly suitable for beginners or unskilled operators to operate.

In an embodiment, the novel expansion pipe further comprises an expansion pipe head 200, and the expansion pipe head 200 is arranged at one end of the expansion pipe body 100 far away from the tapered hole 102; the outer diameter of the expanding tube head 200 is gradually reduced from the end near the expanding tube body 100. In use, the head part 200 of the expansion tube is initially expanded to gradually open the mouth of the surgical pipeline; the expanding tube body 100 enters the operation pipeline along with the expanding tube head 200 to be expanded so as to meet the requirement of the operation pipeline.

In this embodiment, the expandable tubular head 200 is integrally provided with the expandable tubular body 100. The through hole 101 is disposed through the expansion tube head 200.

In other embodiments, a separate structure may be disposed between the expansion tube head 200 and the expansion tube body 100, and the separate structure may be fixedly connected by screwing, welding, bonding, or the like. The connection between the expansion pipe head 200 and the expansion pipe body 100 is in smooth transition, so that the novel expansion pipe can be smoothly inserted into the body of a patient to expand the pipeline in the expansion process.

The projection of the expansion pipe head 200 is isosceles trapezoid; thereby, ensure that novel expansion pipe can insert the patient in vivo smoothly, avoid taking place card dun, skew scheduling problem. In this embodiment, the angle between the two projected waists of the dilating tube head 200 is 30 °, so that the dilating tube head 200 gradually opens the subcutaneous tissue of the patient and is inserted into the body of the patient to dilate the duct. If the included angle between the two waists of the head part 200 of the expansion tube is too small, the head part 200 of the expansion tube is too sharp, so that the risk of puncturing the blood vessel or the dural sac exists; if the angle between the two waists of the dilating tube head 200 is too large, it is not favorable for the dilating tube head 200 to be inserted into the patient for dilating the duct.

In an embodiment, the end of the dilating tube head 200 away from the dilating tube body 100 is provided with a blunt surface 201, and the blunt surface 201 is used for ensuring the safe injection of the anesthetic.

Specifically, when the novel dilation tube is inserted into a patient, the dilation tube head 200 is of a blunt design. Therefore, when the novel expansion tube is inserted and expanded, the injector is connected to inject the anesthetic, and the blunt surface of the head part 200 of the expansion tube cannot pierce the dural sac or the blood vessel in front of the head part, so that the anesthetic cannot enter the dural sac or the blood vessel, and the safety of the anesthetic injection is ensured.

In the embodiment shown in fig. 5, the diameter of the through hole 101 is 1.8 mm. Since the through-hole 101 has a large size, in use, a 1.8 mm-diameter k-wire 400 can be inserted through the through-hole 101 onto the spinal bone. Compared with the traditional guide wire, the kirschner wire 400 has certain hardness, so that when the kirschner wire 400 is inserted, a tool can be used for knocking the kirschner wire 400, the tip of the kirschner wire 400 is directly fixed on the spinal bone, and the fixation of a target site is realized. The size of the channel in the expansion pipe in the prior art is small, and only a guide wire can be inserted for guiding, so that the fixation of a target point part cannot be realized due to the fact that the material of the guide wire is soft.

In this embodiment, the external diameter of the dilation tube body 100 is 6.5mm to meet the requirement of endoscopic surgery with corresponding size; the size of the operation channel is reduced as much as possible while the expansion width of the pipeline required by the operation is ensured, and the postoperative recovery is facilitated.

In this embodiment, the total length of novel expansion pipe sets up to 250mm to make novel expansion pipe after inserting the patient internal, ensure that a part exposes outside the patient, the medical personnel of being convenient for are handheld, thereby the follow-up operations such as taking out of being convenient for. If the total length of the novel expansion pipe is too short, the expansion pipe cannot reach the target site, and subsequent operation cannot be performed; if the total length of the novel expansion tube is too long, the operation of medical personnel can be hindered, and the production cost of the novel expansion tube is increased.

In the operation, the novel expansion tube can be used for expansion after the skin is directly broken by a scalpel without puncture by a puncture needle. Meanwhile, the injector 300 can be connected to the conical hole 102 for anesthetic feeding while expanding, and the efficiency is improved. Subsequently, the kirschner wire 400 is inserted into the novel expansion tube, and the kirschner wire 400 is directly fixed on the spinal bone through a tool, so that the target site is fixed, and the surgical instruments such as an endoscope and the like can accurately reach the target site to perform an operation when being inserted. After the expansion action is completed, the novel expansion tube is taken out, and an endoscope and other surgical instruments are inserted along the kirschner wire 400 for subsequent surgical operation.

Example two

In the embodiment, a new type of dilating tube differs from the first embodiment in the following aspects:

the projection of the expansion pipe head 200 is of an isosceles trapezoid structure, and the included angle between the two projected waists of the expansion pipe head 200 is 60 degrees.

In this embodiment, the diameter of the through hole 101 is 2.0 mm. To ensure that the k-wire can be inserted. So that in use, a 2.0mm diameter k-wire 400 can be inserted through the through hole 101 and onto the spinal bone. Compared with the traditional guide wire, the kirschner wire 400 has certain hardness, so that when the kirschner wire 400 is inserted, a tool can be used for knocking the kirschner wire 400, the tip of the kirschner wire 400 is directly fixed on the spinal bone, and the fixation of a target site is realized.

In this embodiment, the outer diameter of the expanding tube body 100 is 12.2 mm; the width of the pipeline required by the operation is ensured, and the size of the operation channel is reduced as much as possible, so that the effect of minimally invasive operation is achieved.

In this embodiment, the total length of the novel dilation tube is set to 260 mm.

In use, after the skin is broken by the surgical knife, the novel expansion tube is inserted into the subcutaneous tissue of a patient for expansion. Meanwhile, the medical staff can feed the anesthetic while expanding the syringe 300 connected to the tapered hole 102, thereby improving the efficiency of the operation. Subsequently, the injector 300 is removed, the kirschner wire 400 is inserted into the novel dilation tube, and the kirschner wire 400 is directly fixed on the spinal bone through a tool, so that the target site is fixed. After the expansion action is finished, the novel expansion tube is taken out, and an endoscope and other surgical instruments are inserted along the Kirschner wire 400 for subsequent surgical operation.

EXAMPLE III

In the embodiment, a novel expansion pipe is different from the first embodiment in that:

in this embodiment, the projection of the head 200 of the dilating tube is isosceles trapezoid; the angle between the two waists after the projection of the head 200 of the extension tube is 45 degrees. Thereby, the novel expansion pipe can be ensured to be smoothly inserted into the body of a patient for expansion.

In other embodiments, the angle between the projected two waists of the dilating-tube head 200 may be set to be 34 °, 50 ° or other angles.

In this embodiment, the diameter of the through hole 101 is 2.5 mm.

In use, a 2.5mm diameter k-wire 400 may be inserted through the through hole 101 and onto the spinal bone. Compared with the traditional guide wire, the kirschner wire 400 has certain hardness, so that when the kirschner wire 400 is inserted, a tool can be used for knocking the kirschner wire 400, the tip of the kirschner wire 400 is directly fixed on the spinal bone, and the fixation of a target site is realized.

In other embodiments, the diameter of the through hole 101 may be set to other dimensions such as 1.5mm, etc., so as to ensure that the kirschner wire 400 with corresponding dimensions can be inserted into the novel dilation tube, and the target point position can be located.

In this embodiment, the outer diameter of the expanding tube body 100 is 9.2 mm; the size of the operation channel is reduced as much as possible while ensuring that the width of the channel required by the operation is achieved.

In this embodiment, the total length of the novel dilation tube is set to 255 mm; thereby ensuring that a part of the novel expansion pipe is exposed outside the body of the patient when the novel expansion pipe is inserted into the body of the patient and expanded.

In other embodiments, the outer diameter of the expandable tubular body 100 may be set to 7.5mm, 10.2 mm.

In other embodiments, the outer diameter of the expandable tubular body 100 may be set to other dimensions between 6.5mm and 12.2 mm.

In this embodiment, the total length of the novel expanding tube can be set to 240 mm.

In other embodiments, the total length of the novel expansion pipe can be set to be 245mm, 265mm and other sizes.

In use, the novel expansion tube can be used for expansion after the skin is directly broken by the scalpel without puncture by a puncture needle. Meanwhile, the injector 300 can be connected to the conical hole 102 for anesthetic feeding while expanding, and the efficiency is improved. Subsequently, the kirschner wire 400 is inserted into the novel expansion tube, and the kirschner wire 400 is directly fixed on the spinal bone through a tool, so that the target site is fixed. After the expansion action is completed, the novel expansion tube is taken out, and then an endoscope and other surgical instruments are inserted along the kirschner wire 400 for subsequent surgical operation.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (7)

1. The novel expansion pipe is characterized by comprising an expansion pipe body, wherein a through hole is formed in the expansion pipe body; one end of the through hole is communicated with a conical hole; the end with the larger caliber of the conical hole is far away from the through hole; the tapered hole is used for connecting the output end of the injector to inject the anesthetic, wherein the diameter of the larger-caliber end of the tapered hole is larger than that of the output end of the injector, and the diameter of the smaller-caliber end of the tapered hole is smaller than that of the output end of the injector;

the novel expansion pipe further comprises an expansion pipe head, the outer diameter of the expansion pipe head is gradually reduced from one end close to the expansion pipe body, the included angle between two waists of the expansion pipe head after projection is 50-60 degrees, one end, away from the expansion pipe body, of the expansion pipe head is provided with a blunt surface, and the blunt surface is used for ensuring the safe feeding of anesthetic.

2. The novel dilation tube of claim 1 wherein the diameter of said through holes is between 1.5mm and 2.5 mm.

3. The novel dilation tube of claim 2 wherein the through holes are 1.8mm or 2.0mm in diameter.

4. The novel dilation tube of claim 1 wherein the outer diameter of the dilation tube body is between 6.5mm and 12.2 mm.

5. The novel dilation tube of claim 4 wherein the outer diameter of the dilation tube body is one of 6.5mm, 7.5mm, 9.2mm, 10.2mm, 12.2 mm.

6. The novel expanding tube of claim 1, wherein the expanding tube head is disposed at an end of the expanding tube body distal from the tapered bore.

7. The novel dilation tube of claim 1 wherein the projection of the dilation tube head is isosceles trapezoid.

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