A flat-tipped needle for surgery

Abstract

The utility model discloses a flat-head needle for surgery, including a needle seat, a mounting groove is provided in the middle of the upper end of the needle seat, an elastic clip is provided in an annular manner on the upper end of the needle seat located outside the mounting groove, a threaded portion is provided on the upper outer side of the needle seat, a fastening screw ring is provided on the threaded portion, a threaded cavity is provided in the fastening screw ring at a position cooperating with the threaded portion, and a conical pressure cavity is provided in the fastening screw ring located above the threaded cavity. The beneficial effect is that the utility model installs an elastic clip with a conical surface in an annular manner on the upper end of the needle seat, and installs a fastening screw ring with a conical pressure cavity on the threaded portion outside the needle seat, so that when the flat-head needle is used, the fastening screw ring can reliably press the elastic clip on the end of the external suction tube while the fastening screw ring moves down along the threaded portion, effectively avoiding the flat-head needle from falling off from the external suction tube during cataract emulsification surgery, making the flat-head needle safer when used.

Description

Technical Field

[0001] The utility model relates to the technical field of medical surgical instruments, in particular to a flat-head needle for surgery. Background Art

[0002] During the cataract phacoemulsification surgery, a flat-head needle is needed to extract the chylous objects in the patient's eye to ensure the smooth progress of the cataract phacoemulsification surgery.

[0003] The flat-head needle currently used in cataract phacoemulsification surgery is mainly composed of a needle seat, a needle rod installed at the suction end of the needle seat, and a needle formed at the end of the needle rod. Although the flat-head needle of this structure can cooperate with the negative pressure suction and perfusion system to extract the chyle-like substances in the patient's eye when used, the flat-head needle of this structure is mostly used by directly inserting the needle seat into the suction tube. The direct insertion method is prone to the safety hazard of the flat-head needle falling off during use due to the lack of firm fit between the flat-head needle and the external suction tube, making the use of the flat-head needle less safe. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The technical problem to be solved by the utility model is to provide a surgical flat-head needle that can actively clamp and lock in a way to effectively prevent the flat-head needle from falling off between the external suction tube during use, in view of the current status of the prior art.

[0006] (II) Technical solution

[0007] The utility model is achieved through the following technical scheme: the utility model proposes a flat-head needle for surgery, including a needle seat, a mounting groove is opened in the middle of the upper end of the needle seat, the upper end of the needle seat is located outside the mounting groove and is annularly installed with an elastic clip, a threaded portion is installed on the upper outer side of the needle seat, a fastening screw ring is installed on the threaded portion, a threaded cavity is opened in the fastening screw ring at a position cooperating with the threaded portion, and a conical pressure cavity is opened in the fastening screw ring at the upper side of the threaded cavity.

[0008] Furthermore, the elastic clip is composed of a conical portion at the lower side and a vertical portion at the upper side, wherein the conical portion of the elastic clip is bonded to the needle seat.

[0009] By adopting the above technical solution, it can be ensured that the elastic clip is reliably installed and fixed on the needle seat.

[0010] Furthermore, the conical surface pressure cavity is formed on the fastening screw ring, and the taper of the conical surface pressure cavity is the same as the taper of the conical surface portion of the elastic clip.

[0011] By adopting the above technical solution, it is ensured that the conical pressure chamber can apply force to the conical surface of the elastic clip after moving downward, so that the elastic clip can be reliably clamped on the outer wall of the external suction tube, thereby achieving a firm installation of the flat-head needle.

[0012] Furthermore, the fastening screw ring is screwed to the threaded portion, and the height of the threaded cavity matches the height of the threaded portion.

[0013] By adopting the above technical solution, convenient rotation adjustment of the fastening screw ring relative to the threaded portion can be achieved.

[0014] Furthermore, an anti-slip strip is installed on the outer wall of the fastening screw ring, and the anti-slip strip is a rubber strip.

[0015] By adopting the above technical solution, the anti-slip strip can effectively prevent the fastening screw ring from sliding relative to the staff's hand during adjustment.

[0016] Furthermore, a needle rod is installed in the middle of the bottom end of the needle seat, and the bottom end of the needle rod is also connected to a needle head.

[0017] By adopting the above technical solution, the needle rod and the needle head are the main structures of the flat-head needle suction.

[0018] Furthermore, the length of the needle rod is 14 mm, the length of the needle head is 2 mm, and the angle between the needle rod and the needle head is 130°.

[0019] By adopting the above technical solution, it can be ensured that the needle rod and the needle head can be easily inserted into the patient's eyes so as to suck the chyle in the patient's eyes. At the same time, the needle rod and the needle head can be changed from the Kangdeli medical disposable lacrimal duct flushing needle to ensure the efficient preparation of the flat-head needle.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] In order to solve the problem that the flat-head needle currently used in cataract phacoemulsification surgery mainly consists of a needle seat, a needle rod installed at the suction end of the needle seat and a needle formed at the end of the needle rod, although the flat-head needle of this structure can cooperate with the suction and perfusion system to extract the chyle-like objects in the patient's eye when in use, because the flat-head needle of this structure is mostly used by directly inserting the needle seat into the suction tube, the direct insertion method is easy to cause the flat-head needle to fall off during use due to the insufficient cooperation between the flat-head needle and the external suction tube, resulting in a safety hazard of the flat-head needle falling off during use, making the flat-head needle less safe to use. The utility model arranges an elastic clip with a conical surface in a ring shape on the upper end of the needle seat, and installs a fastening screw ring with a conical pressure cavity on the threaded portion outside the needle seat, so that when the flat-head needle is in use, the fastening screw ring can move downward along the threaded portion to reliably press the elastic clip on the end of the external suction tube, effectively avoiding the flat-head needle from falling off from the external suction tube during cataract emulsification surgery, making the flat-head needle safer when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of a flat-head needle for surgery described in the utility model;

[0024] Figure 2 This is a main cross-sectional view of a flat-head needle for surgery described in the utility model;

[0025] Figure 3 The utility model is a kind of flat-head needle for surgery Figure 2 Enlarged view of point A in the middle.

[0026] The following are the descriptions of the reference numerals:

[0027] 1. Fastening screw ring; 2. Anti-slip strip; 3. Needle seat; 4. Needle rod; 5. Needle head; 6. Threaded part; 7. Mounting groove; 8. Elastic clip; 9. Conical pressure cavity; 10. Threaded cavity. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] like Figure 1-Figure 3As shown, a surgical flat-head needle in this embodiment includes a needle seat 3, a mounting groove 7 is provided in the middle of the upper end of the needle seat 3, an elastic clip 8 is installed in a ring shape on the outer side of the mounting groove 7 at the upper end of the needle seat 3, a threaded portion 6 is installed on the outer upper side of the needle seat 3, a fastening screw ring 1 is installed on the threaded portion 6, a threaded cavity 10 is provided in the fastening screw ring 1 at the matching position with the threaded portion 6, a conical pressure cavity 9 is provided in the fastening screw ring 1 at the upper side of the threaded cavity 10, and the taper of the conical pressure cavity 9 is the same as the taper of the conical surface portion of the elastic clip 8, ensuring that the conical pressure cavity 9 can be reliably clamped on the outer wall of the external suction tube by applying force to the conical surface portion of the elastic clip 8 after moving downward, thereby realizing the firm installation of the flat-head needle.

[0030] like Figure 1-Figure 3 As shown, in this embodiment, the elastic clip 8 is composed of a conical portion on the lower side and a vertical portion on the upper side, wherein the conical portion of the elastic clip 8 is bonded to the needle seat 3, which can ensure that the elastic clip 8 is reliably installed and fixed on the needle seat 3, and the conical pressure cavity 9 is formed on the fastening screw ring 1.

[0031] like Figure 1-Figure 3 As shown, in this embodiment, the fastening screw ring 1 is screwed to the threaded portion 6, and the height of the threaded cavity 10 matches the height of the threaded portion 6, so that the fastening screw ring 1 can be easily rotated and adjusted relative to the threaded portion 6. An anti-slip strip 2 is also installed on the outer wall of the fastening screw ring 1, and the anti-slip strip 2 is a rubber strip. The anti-slip strip 2 can effectively prevent the fastening screw ring 1 from sliding relative to the staff's hands during adjustment.

[0032] like Figure 1-Figure 2 As shown, in this embodiment, a needle rod 4 is installed in the middle of the bottom end of the needle seat 3, and a needle head 5 is also connected to the bottom end of the needle rod 4. The needle rod 4 and the needle head 5 are the main structures of the flat-head needle suction. The length of the needle rod 4 is 14 mm, the length of the needle head 5 is 2 mm, and the angle between the needle rod 4 and the needle head 5 is 130°, which can ensure that the needle rod 4 and the needle head 5 can be easily inserted into the patient's eyes to suction the chyle in the patient's eyes. At the same time, the needle rod 4 and the needle head 5 can be changed from a disposable tear duct flushing needle used by Kangdeli Medical to ensure the efficient preparation of the flat-head needle.

[0033] The specific implementation process of this embodiment is as follows: when in use, the end of the suction tube in the suction and irrigation system in the cataract emulsification surgery is inserted into the mounting groove 7 and locked, and then the flat-headed needle can be used to extract the chyle after ultrasonic emulsification of the patient's eye to ensure the efficient implementation of the cataract emulsification surgery. During use, an elastic clip 8 with a conical surface is installed in a ring shape on the upper end of the needle seat 3, and a fastening screw ring 1 with a conical pressure chamber 9 is installed on the threaded portion 6 on the outer side of the needle seat 3, so that the flat-headed needle can reliably press the elastic clip 8 on the end of the external suction tube while the fastening screw ring 1 moves downward along the threaded portion 6 when in use, effectively avoiding the flat-headed needle from falling off from the external suction tube during the cataract emulsification surgery, making the flat-headed needle safer when in use.

[0034] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flat-tipped needle for surgery, characterized in that: The invention comprises a needle seat (3), wherein a mounting groove (7) is provided in the middle of the upper end of the needle seat (3), an elastic clip (8) is provided in the shape of a ring on the upper end of the needle seat (3) and is located outside the mounting groove (7), a threaded portion (6) is provided on the upper outer side of the needle seat (3), a fastening screw ring (1) is provided on the threaded portion (6), a threaded cavity (10) is provided in the fastening screw ring (1) at a position cooperating with the threaded portion (6), and a conical pressure cavity (9) is provided in the fastening screw ring (1) and is located on the upper side of the threaded cavity (10).

2. A surgical flat-tip needle according to claim 1, characterized in that: The elastic clip (8) is composed of a conical portion at the lower side and a vertical portion at the upper side, wherein the conical portion of the elastic clip (8) is bonded to the needle seat (3).

3. A surgical flat-head needle according to claim 2, characterized in that: The conical pressure cavity (9) is formed on the fastening screw ring (1), and the taper of the conical pressure cavity (9) is the same as the taper of the conical surface of the elastic clip (8).

4. A surgical flat-tip needle according to claim 1, characterized in that: The fastening screw ring (1) is screwed to the threaded portion (6), and the height of the threaded cavity (10) matches the height of the threaded portion (6).

5. A surgical flat-tip needle according to claim 1, characterized in that: An anti-slip strip (2) is also installed on the outer wall of the fastening screw ring (1), and the anti-slip strip (2) is a rubber strip.

6. A surgical flat-tip needle according to claim 1, characterized in that: A needle rod (4) is installed in the middle of the bottom end of the needle seat (3), and a needle head (5) is also connected to the bottom end of the needle rod (4).

7. A surgical flat-tip needle according to claim 6, characterized in that: The needle rod (4) is 14 mm long, and the needle head (5) is 2 mm long.

8. A surgical flat-tip needle according to claim 7, characterized in that: The included angle between the needle rod (4) and the needle head (5) is 130°.

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