Closed atrial septal dilation scalpel

Abstract

This application discloses a closed-type atrial septal dilation surgical knife, comprising a blade body and a scabbard. The blade body comprises a shank, a handle, and a blade tip. The handle is connected to one end of the shank, with scale lines on the side and a blade direction indicator line at the rear end. The shank is provided with external threads, and the other end of the shank is connected to the blade tip. The scabbard is a hollow tubular structure, with internal threads on the inner wall of the scabbard matching the external threads. The front end of the scabbard is provided with an ampulla-shaped expansion, and the front end of the ampulla-shaped expansion is provided with a blade exit hole, through which the blade tip can enter and exit. The interior of the scabbard accommodates the blade body. The scabbard of this application is connected to the blade body via a threaded connection, allowing for fine adjustment of the blade exit depth. The short operating distance avoids the impact on cardiopulmonary function caused by traditional extracorporeal circulation surgery and the potential secondary damage to blood vessels and surrounding tissues caused by puncture during interventional surgery. It is suitable for patients of different ages and weights, and different models of scabbards can be replaced as needed to complete atrial septal dilation.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, in particular to a closed atrial septum dilation scalpel. Background Art

[0002] Atrial septostomy or enlargement can improve the hemodynamics of children by increasing mixed blood flow in the systemic and pulmonary veins, reducing left or right atrial pressure, improving blood oxygen saturation, and alleviating hypoxia and ischemia in children. It is an important palliative treatment for complex congenital heart disease. It is currently commonly used in cases such as left atrial decompression under extracorporeal membrane oxygenation (ECMO) circulation, left (right) heart obstructive disease, left ventricular hypoplastic syndrome, complete transposition of the great arteries, and total anomalous pulmonary venous connection. Currently, the main surgical methods for atrial septostomy or enlargement include surgery and intervention.

[0003] Traditional surgical procedures require extracorporeal circulation, which exacerbates heart and lung damage in children, especially critically ill children, such as those undergoing ECMO after surgery for congenital heart disease. Repeated extracorporeal circulation can severely impact the child's cardiopulmonary function and even lead to death. While interventional balloon dilatation can avoid extracorporeal circulation, it often requires radiation exposure, increasing radiation exposure. For young infants, excessive force or poor positioning of the balloon can often lead to collateral damage to the heart and major blood vessels. Rupture of the inferior vena cava is a common and serious complication. Furthermore, ECMO is not suitable for children undergoing cardiac intubation. Furthermore, the consumables required for extracorporeal circulation and interventional procedures are expensive, placing a heavy financial burden on the patient's family. Summary of the Invention

[0004] The purpose of the present invention is to provide a closed atrial septum dilation scalpel, which can be used to complete atrial septostomy or dilation through a surgical approach without extracorporeal circulation, and has the advantages of small damage, simple operation, and wide indications.

[0005] One aspect of the present invention provides a closed atrial septum dilation surgical knife, comprising a knife body and a knife sheath;

[0006] The knife body includes a knife rod, a knife handle and a knife tip; the knife handle is connected to one end of the knife rod, a scale line is provided on the side of the knife handle, and a blade direction indicator line is provided at the tail end; the knife rod is provided with an external thread, and the other end of the knife rod is connected to the knife tip;

[0007] The scabbard is a hollow tubular structure, the inner wall of the scabbard is provided with an internal thread, the internal thread matches the external thread, the front end of the scabbard is provided with an ampulla-shaped expansion, the front end of the ampulla-shaped expansion is provided with a knife outlet hole, and the knife tip can enter and exit the knife outlet hole;

[0008] The knife body can be accommodated inside the scabbard.

[0009] In the above-mentioned closed atrial septum dilation surgical knife, the diameter of the knife shaft is larger than the width of the knife tip, and the diameter of the knife exit hole is larger than the width of the knife tip and smaller than the diameter of the knife shaft.

[0010] In the above-mentioned closed atrial septum dilation surgical knife, the scabbard is provided with different models, and the diameter of the ampulla-shaped expansion of each model is different.

[0011] In the above-mentioned closed atrial septum dilation surgical knife, the knife handle is a polygonal column structure or has carvings that increase rotational friction.

[0012] In the above-mentioned closed atrial septum dilation surgical knife, the outer wall of the sheath is provided with an anti-slip structure.

[0013] Beneficial effects

[0014] The scalpel of the present application can be used to finely adjust the depth of the knife, and cardiac atrial septostomy or enlargement surgery can be performed under normal temperature and non-extracorporeal circulation while the heart is beating, thus avoiding the impact of extracorporeal circulation on cardiopulmonary function. The surgical process can be guided by ultrasound to avoid radiation damage. The operating distance is short, which avoids possible puncture and secondary damage to blood vessels and surrounding tissues during interventional surgery. It is applicable to patients of different ages and weights, and different types of sheaths can be replaced as needed. This method is still applicable to patients undergoing cardiac intubation and ECMO assistance, and has obvious advantages, avoiding the possibility of aggravating cardiopulmonary damage. At the same time, the scalpel can be disinfected and reused, and the cost is not high. Compared with extracorporeal circulation atrial septum incision and interventional balloon dilatation, the cost is significantly reduced. In general, the present invention has the advantages of being economical and practical, easy to operate, with little secondary damage, and a wide range of indications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the blade body of the closed atrial septum dilation scalpel in this embodiment;

[0016] Figure 2 This is a left side view of the blade body of the closed atrial septum dilation scalpel in this embodiment;

[0017] Figure 3 This is an enlarged top view of the blade of the closed atrial septum dilation scalpel in this embodiment;

[0018] Figure 4 Schematic diagram of the blade body of the closed atrial septum dilation scalpel in this embodiment;

[0019] Figure 5 A front view of the sheath of the closed atrial septum dilation scalpel in this embodiment;

[0020] Figure 6 This is an enlarged top view of the scabbard of the closed atrial septum dilation scalpel in this embodiment;

[0021] Figure 7 Schematic diagram of the sheath of the closed atrial septum dilation scalpel in this embodiment;

[0022] Figure 8 Schematic diagram of the overall structure of the closed atrial septum dilation scalpel in this embodiment.

[0023] The reference numerals in the accompanying drawings are:

[0024] The knife body 1, the knife handle 11, the scale line 111, the indicator line 112, the knife rod 12, the knife tip 13, the knife sheath 2, the ampulla-shaped expansion 21, and the knife outlet hole 22. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below in conjunction with the drawings in the embodiments of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be understood as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0026] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as limiting the scope of protection of this application.

[0027] like Figures 1 to 8 The closed-type atrial septal dilation surgical knife of the present invention comprises a blade body 1 and a scabbard 2. The blade body 1 comprises a shank 12, a handle 11, and a blade tip 13. The handle 11 is connected to one end of the shank 12. A scale mark 111 is provided on the side of the handle 11, and a blade direction indicator 112 is provided at the rear end. Preferably, the handle 11 has a multi-prism structure or has inscriptions that increase rotational friction, which increases friction when the doctor adjusts the blade length to prevent slippage. The shank 12 is externally threaded, and the other end of the shank 12 is connected to the blade tip 13.

[0028] The scabbard 2 is a hollow tubular structure with internal threads on its inner wall, which mate with external threads. A bulge 21 is provided at the front end of the scabbard 2, with a blade exit hole 22 at the front end of the bulge 21, through which the blade tip 13 can enter and exit. The scabbard 2 accommodates the blade body 1. Preferably, the diameter of the shank 12 is greater than the width of the blade tip 13, and the diameter of the blade exit hole 22 is greater than the width of the blade tip 13 but smaller than the diameter of the shank 12. This prevents the blade tip 13 from extending too far due to misoperation. More preferably, the scabbard 2 is available in different sizes, each with a different diameter of the bulge 21 to accommodate different atrial septal dilation requirements. More preferably, the outer wall of the scabbard 2 is provided with an anti-slip structure, which can be a non-slip layer, non-slip ridges, or non-slip grooves.

[0029] When using the closed atrial septal dilation scalpel of the present application, the handle 11 can be rotated to expose the micro-tip 13 to the scabbard 2. The length of the tip 13 can be identified and controlled by observing the scale lines 111 on the handle 11, and the direction of the tip 13 can be identified by the indicator line 112 at the end of the handle 11. When using this scalpel to perform closed atrial dilation, a purse is first placed on the right atrial wall, the atrial wall is incised within the purse, the tip 13 of the scalpel is placed in the scabbard 2, and inserted into the right atrium along the atrial wall incision. The atrial wall purse is tightened to prevent bleeding. Under the guidance of transesophageal ultrasound or transthoracic ultrasound, the top of the scalpel is aligned with the atrial septum, the handle 11 is rotated to expose the tip 13, and the atrial septum is punctured with a slight slide. The handle 11 is then rotated to retract the tip 13 back into the scabbard 2, and the atrial septal incision is enlarged at the ampulla-shaped bulge 21 of the scabbard 2 to complete the atrial septostomy or dilation.

[0030] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made based on the present invention. Therefore, such modifications and improvements, which do not depart from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A closed atrial septal dilation scalpel, characterized in that: Including knife body and scabbard; The knife body includes a knife rod, a knife handle and a knife tip; the knife handle is connected to one end of the knife rod, a scale line is provided on the side of the knife handle, and a blade direction indicator line is provided at the tail end; the knife rod is provided with an external thread, and the other end of the knife rod is connected to the knife tip; The scabbard is a hollow tubular structure, the inner wall of the scabbard is provided with an internal thread, the internal thread matches the external thread, the front end of the scabbard is provided with an ampulla-shaped expansion, the front end of the ampulla-shaped expansion is provided with a knife outlet hole, and the knife tip can enter and exit the knife outlet hole; The knife body can be accommodated inside the scabbard; The diameter of the knife rod is larger than the width of the knife tip, and the diameter of the knife outlet hole is larger than the width of the knife tip and smaller than the diameter of the knife rod; The scabbard is provided in different models, and each model has a different diameter of the ampulla-shaped expansion; The knife handle is a polygonal column structure or has carvings that increase rotational friction; The outer wall of the scabbard is provided with an anti-slip structure.

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